From owner-neuroscience@net.bio.net Tue Feb 01 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!uunet!concert!borg.cs.unc.edu!not-for-mail From: marshall@cs.unc.edu (Jonathan Marshall) Newsgroups: comp.ai.fuzzy,comp.ai.neural-nets,triangle.neural-nets,sci.cognitive,sci.image.processing,bionet.neuroscience,comp.theory.self-org-sys,comp.speech Subject: Papers on visual occlusion and neural networks Followup-To: comp.ai.neural-nets Date: 2 Feb 1994 13:57:17 -0500 Organization: The University of North Carolina at Chapel Hill Lines: 132 Distribution: world Expires: 01 Mar 94 Message-ID: <2iot2dINNhkt@marshall.cs.unc.edu> NNTP-Posting-Host: marshall.cs.unc.edu Xref: biosci comp.ai.fuzzy:1427 comp.ai.neural-nets:5733 sci.cognitive:2399 sci.image.processing:4674 bionet.neuroscience:2517 comp.theory.self-org-sys:190 comp.speech:1644 Dear Colleagues, Below I list two new papers that I have added to the Neuroprose archives (thanks to Jordan Pollack!). In addition, I list two of my older papers in Neuroprose. You can retrieve a copy of these papers -- follow the instructions at the end of this message. --Jonathan ---------------------------------------------------------------------------- marshall.occlusion.ps.Z (5 pages) A SELF-ORGANIZING NEURAL NETWORK THAT LEARNS TO DETECT AND REPRESENT VISUAL DEPTH FROM OCCLUSION EVENTS JONATHAN A. MARSHALL and RICHARD K. ALLEY Department of Computer Science, CB 3175, Sitterson Hall University of North Carolina, Chapel Hill, NC 27599-3175, U.S.A. marshall@cs.unc.edu, alley@cs.unc.edu Visual occlusion events constitute a major source of depth information. We have developed a neural network model that learns to detect and represent depth relations, after a period of exposure to motion sequences containing occlusion and disocclusion events. The network's learning is governed by a new set of learning and activation rules. The network develops two parallel opponent channels or "chains" of lateral excitatory connections for every resolvable motion trajectory. One channel, the "On" chain or "visible" chain, is activated when a moving stimulus is visible. The other channel, the "Off" chain or "invisible" chain, is activated when a formerly visible stimulus becomes invisible due to occlusion. The On chain carries a predictive modal representation of the visible stimulus. The Off chain carries a persistent, amodal representation that predicts the motion of the invisible stimulus. The new learning rule uses disinhibitory signals emitted from the On chain to trigger learning in the Off chain. The Off chain neurons learn to interact reciprocally with other neurons that indicate the presence of occluders. The interactions let the network predict the disappearance and reappearance of stimuli moving behind occluders, and they let the unexpected disappearance or appearance of stimuli excite the representation of an inferred occluder at that location. Two results that have emerged from this research suggest how visual systems may learn to represent visual depth information. First, a visual system can learn a nonmetric representation of the depth relations arising from occlusion events. Second, parallel opponent On and Off channels that represent both modal and amodal stimuli can also be learned through the same process. [In Bowyer KW & Hall L (Eds.), Proceedings of the AAAI Fall Symposium on Machine Learning and Computer Vision, Research Triangle Park, NC, October 1993, 70-74.] ---------------------------------------------------------------------------- marshall.context.ps.Z (46 pages) ADAPTIVE PERCEPTUAL PATTERN RECOGNITION BY SELF-ORGANIZING NEURAL NETWORKS: CONTEXT, UNCERTAINTY, MULTIPLICITY, AND SCALE JONATHAN A. MARSHALL Department of Computer Science, CB 3175, Sitterson Hall University of North Carolina, Chapel Hill, NC 27599-3175, U.S.A. marshall@cs.unc.edu A new context-sensitive neural network, called an "EXIN" (excitatory+ inhibitory) network, is described. EXIN networks self-organize in complex perceptual environments, in the presence of multiple superimposed patterns, multiple scales, and uncertainty. The networks use a new inhibitory learning rule, in addition to an excitatory learning rule, to allow superposition of multiple simultaneous neural activations (multiple winners), under strictly regulated circumstances, instead of forcing winner-take-all pattern classifications. The multiple activations represent uncertainty or multiplicity in perception and pattern recognition. Perceptual scission (breaking of linkages) between independent category groupings thus arises and allows effective global context-sensitive segmentation and constraint satisfaction. A Weber Law neuron-growth rule lets the network learn and classify input patterns despite variations in their spatial scale. Applications of the new techniques include segmentation of superimposed auditory or biosonar signals, segmentation of visual regions, and representation of visual transparency. [Submitted for publication.] ---------------------------------------------------------------------------- marshall.steering.ps.Z (16 pages) CHALLENGES OF VISION THEORY: SELF-ORGANIZATION OF NEURAL MECHANISMS FOR STABLE STEERING OF OBJECT-GROUPING DATA IN VISUAL MOTION PERCEPTION JONATHAN A. MARSHALL [Invited paper, in Chen S-S (Ed.), Stochastic and Neural Methods in Signal Processing, Image Processing, and Computer Vision, Proceedings of the SPIE 1569, San Diego, July 1991, 200-215.] ---------------------------------------------------------------------------- martin.unsmearing.ps.Z (8 pages) UNSMEARING VISUAL MOTION: DEVELOPMENT OF LONG-RANGE HORIZONTAL INTRINSIC CONNECTIONS KEVIN E. MARTIN and JONATHAN A. MARSHALL [In Hanson SJ, Cowan JD, & Giles CL, Eds., Advances in Neural Information Processing Systems, 5. San Mateo, CA: Morgan Kaufmann Publishers, 1993, 417-424.] ---------------------------------------------------------------------------- RETRIEVAL INSTRUCTIONS % ftp archive.cis.ohio-state.edu Name (cheops.cis.ohio-state.edu:yourname): anonymous Password: (use your email address) ftp> cd pub/neuroprose ftp> binary ftp> get marshall.occlusion.ps.Z ftp> get marshall.context.ps.Z ftp> get marshall.steering.ps.Z ftp> get martin.unsmearing.ps.Z ftp> quit % uncompress marshall.occlusion.ps.Z ; lpr marshall.occlusion.ps % uncompress marshall.context.ps.Z ; lpr marshall.context.ps % uncompress marshall.steering.ps.Z ; lpr marshall.steering.ps % uncompress martin.unsmearing.ps.Z ; lpr martin.unsmearing.ps From owner-neuroscience@net.bio.net Tue Feb 01 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!sdd.hp.com!col.hp.com!csn!server!hp7049.stortek.com!gsinger From: gsinger@hp7049.stortek.com (Greg Singer (gsinger)) Subject: REQ: Info from neuroogists et al Message-ID: Sender: usenet@stortek.com Nntp-Posting-Host: hp7049.stortek.com Organization: Storage Technology Corporation X-Newsreader: TIN [version 1.1 PL6] Date: Mon, 31 Jan 1994 20:21:26 GMT Lines: 16 -- Greg Singer StorageTek - Storage Technology Corporation Ph: (303) 673-7495 2270 S. 88th St. MS 5202 Louisville, CO 80028 internet: gsinger@n33.stortek.com --------- --- ------ --- - - - - - - - - - - - - - - - - - - - - - - ------- - - - - - - - - - - - - - - - - - - - - - --------- --- ------- --- From owner-neuroscience@net.bio.net Tue Feb 01 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!swrinde!sgiblab!nec-gw!nec-tyo!wnoc-tyo-news!aist-nara!wnoc-kyo-news!atrwide!atr-hr!atr-hr!andrew From: andrew@hobbes.hip.atr.co.jp (Andrew Lea) Subject: Re: Hearing - up to date theories? References: Date: Wed, 2 Feb 1994 18:33:27 GMT Organization: ATR Human Information Processing Research Labs., Japan Sender: news@hip.atr.co.jp (USENET News System) In-Reply-To: David.Martland@brunel.ac.uk's message of Mon, 24 Jan 1994 18:13:33 GMT Message-ID: Lines: 52 asks: >I am trying to find out about up to date theories of >hearing and cognition. There does not seem to be much >information around (here).. does anyone have any pointers. A good introduction to the psychology of hearing is Brain Moore's book "An introduction to he psychology of hearing", 3rd Edition, Academic Press. For the physiology of hearing read J. Pickles's book on oddly enough "The physiology of hearing". >Is hearing less well studied and understood than vision? Well yes and no, but mainly yes. One huge problem with hearing is that it is not vision. Have you ever heard the phrase "seeing is believing" ? This is also true in the hearing research field. We have to be able to see sounds and speech to be able to understand them. In the visual field the stimuli are already in the right domain, thus making understanding easier. A lot of research in hearing at the moment looks at making so-called "auditory images", i.e. useful visual representations of sound and sound processing. Another thing about sound is that it is transparent, i.e. there are two sounds present at the same time then what the ear gets is the sum of the two sounds. But, in the visual world two objects do add together, but stay spatially separate. One recent new theory in the psychology of hearing is that of "Auditory Scene Analysis" or cocktail party processing, expounded by Al Bregman and others. See Al's book "Auditory Scene Analysis" in MIT press (1990). This is basically a theory of how we separate the many sounds that we hear simultaneously into different perceptual units. Hope this helps Dave. If you have any more questions........ Dr. Andy Lea (andrew@hip.atr.co.jp) ATR Human Information Processing Research Laboratories, 2-2 Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-02, Japan. Tel. + 81 7749 51026 Fax. +81 7749 51008 -- Dr. Andy Lea (andrew@hip.atr.co.jp) ATR Human Information Processing Research Laboratories, 2-2 Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-02, Japan. Tel. + 81 7749 51026 Fax. +81 7749 51008 From owner-neuroscience@net.bio.net Tue Feb 01 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!sdd.hp.com!col.hp.com!csn!server!hp7049.stortek.com!gsinger From: gsinger@hp7049.stortek.com (Greg Singer (gsinger)) Subject: REQ: Info from neuroogists et al Message-ID: Sender: usenet@stortek.com Nntp-Posting-Host: hp7049.stortek.com Organization: Storage Technology Corporation X-Newsreader: TIN [version 1.1 PL6] Date: Mon, 31 Jan 1994 23:58:13 GMT Lines: 16 -- Greg Singer StorageTek - Storage Technology Corporation Ph: (303) 673-7495 2270 S. 88th St. MS 5202 Louisville, CO 80028 internet: gsinger@n33.stortek.com --------- --- ------ --- - - - - - - - - - - - - - - - - - - - - - - ------- - - - - - - - - - - - - - - - - - - - - - --------- --- ------- --- From owner-neuroscience@net.bio.net Wed Feb 02 22:00:00 1994 Path: biosci!daresbury!not-for-mail From: Steven Roy Daviss Newsgroups: bionet.neuroscience Subject: SCHIZ-L: Schizophrenia Research Discussion List Date: 3 Feb 1994 01:25:38 -0000 Lines: 71 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2ipjqi$rm7@mserv1.dl.ac.uk> Original-To: Neuroscience Newsgroup , bioforum@net.bio.net A LISTSERV discussion group for schizophrenia research was started in December, 1993, and now has about 120 members. I've attached the NEW-LIST announcement below for those who might be interested. -Steve ----------------------------------------------------------------- SCHIZ-L: CLINICAL AND BASIC SCIENCE RESEARCH IN SCHIZOPHRENIA * To subscribe: send the message "subscribe schiz-l firstname lastname" (in the BODY of the message) to LISTSERV@UMAB.UMD.EDU or to LISTSERV@UMAB.BITNET * To post a message to the list: send the message to SCHIZ-L@UMAB.UMD.EDU or to SCHIZ-L@UMAB.BITNET SCHIZ-L is an unmoderated discussion list devoted to schizophrenia research. The objective of the list is to provide a forum for communications among researchers and others interested in this mental illness. It is hoped that this forum will facilitate discussion of both published and unpublished findings and ideas, foster potential collaborations between investigators, and develop into an information resource for those in this field. The success of any group depends on having a "critical mass" of participants. It is hoped that this list will attain that goal within its first 3-6 months (by July, 1994). List members are encouraged to inform others of its existence and to participate freely. The guidelines are pretty simple: Topics should relate to basic science and/or clinical science as it applies to schizophrenia, or to items that might be of interest to those in this field. These might include questions, comments, or ideas about: * epidemiology * phenomenology/psychopathology (eg, hallucinations, suicide, negative symptoms, rating scales, etc) * psychopharmacology * structural imaging (eg, CT, MRI, MEG, etc) * functional imaging (eg, fMRI, PET, SPECT, CEEG, etc) * biochemical/neurochemical studies * neuroanatomy/neuropathology * postmortem studies (eg, methods, acquisitions, identifi- cation and announcements of available resources, etc) * histological methodologies (eg, autoradiography, immuno- cytochemistry, immunofluorescence, in situ hybridi- zation, stereology, etc) * neurodevelopment * neuropsychological assessments * comments on journal articles * data analysis * use of computer resources (eg, software programs, etc) * Internet resources (eg, How do I do this?, Where do I find that?, etc) * conferences, meetings * you name it. This is an unmoderated group, which means it is up to the list members to steer topics in the direction of the group's needs. The list owner (Steve Daviss ) will be responsible for maintaining the list, the archives, fielding administrative questions, and making sure the list remains active. Your comments and questions are welcome. -Steve From owner-neuroscience@net.bio.net Wed Feb 02 22:00:00 1994 Path: biosci!daresbury!keele!uknet!pipex!howland.reston.ans.net!europa.eng.gtefsd.com!news.umbc.edu!cs.umd.edu!net.usuhs.mil!usenet From: helke@usuhs.ucc.usuhs.nnmc.navy.mil Newsgroups: bionet.neuroscience Subject: graduate training in neuroscience Date: Thu, 3 Feb 94 15:46:10 GMT Organization: The Uniformed Services University of the Health Sciences Lines: 168 Message-ID: <2ir68e$l49@net.usuhs.mil> NNTP-Posting-Host: usuhs.usuhs.mil NEUROSCIENCE GRADUATE PROGRAM AT THE UNIFORMED SERVICES UNIVERSITY OF THE HEALTH SCIENCES SCHOOL OF MEDICINE BETHESDA, MD, USA The Graduate Program in Neuroscience is an interdisciplinary Ph.D. program with courses and research training provided by a Neuroscience Faculty holding primary appointments in the Departments of Anatomy and Cell Biology, Biochemistry, Medical Psychology, Medicine, Microbiology, Neurology, Pathology, Pediatrics, Pharmacology, Physiology and Psychiatry at Uniformed Services University (USUHS). The interdisciplinary nature of the program permits considerable flexibility in the choice of courses and research areas and each student's training program is designed with the interests of the student in mind. We seek to recruit students with a strong undergraduate background in the physical sciences, biological sciences,or psychology who wish to pursue a professional career in neuroscience research. For further information about the program, and for application forms, please contact: Dr. Cinda Helke, Director Graduate Program in Neuroscience Uniformed Services University 4301 Jones Bridge Road Bethesda, Maryland 20814-4799 (301) 295-3238 HELKE@USUHS.BITNET or HELKE@USUHS.USUHS.MIL THE UNIFORMED SERVICES UNIVERSITY OF THE HEALTH SCIENCES The Uniformed Services University is the nation's medical school and is located in Bethesda, MD near the National Institutes of Health. USUHS has modern well-equipped laboratories for the support of a wide variety of research projects. Laboratories suitable for research in most areas of neuroscience are available to students. Central resources include a laboratory for custom synthesis of oligonucleotides and peptides, an animal facility, a medical library and learning resource center, and computer support. High resolution transmission and scanning electron microscopes, video-based computer graphics, laser cytometers and confocal microscopes are all available within the University to students in the Program. RESEARCH AREAS AND FACULTY Neuronal Development and Plasticity: Regina Armstrong, Ph.D. Cellular and molecular mechanisms of glial cell development and regeneration. David Beebe, Ph.D. Cell and molecular biology of development of the mammalian and avian eye. Su Yun Chung, Ph.D. Homeobox gene expression in the developing central nervous system. Cinda Helke, Ph.D. Epigenetic influences regulating neuropeptides and neurotransmitters in mature visceral sensory neurons. Sharon Juliano, Ph.D. Development and plasticity of the mammalian neocortex. Asaf Keller, Ph.D. Organization, development and plasticity of neural networks in the cerebral cortex John Sarvey, Ph.D. Pharmacology of synaptic transmission and activity- dependent plasticity (long-term potentiation) in the CNS. Structure and Function of Mammalian Cortex: Sharon Juliano, Ph.D. Development and plasticity of the mammalian neocortex. Asaf Keller, Ph.D. Organization, development and plasticity of neural networks in the cerebral cortex. Linda Porter, Ph.D. Integration of peripheral input in cat sensorimotor cortex. John Sarvey, Ph.D. Pharmacology of synaptic transmission and activity- dependent plasticity (long-term potentiation) in the CNS. Molecular Neurobiology: -Receptor Function: Thomas Cote, Ph.D. Receptor regulation of GTP binding proteins that control second messenger systems. Brian Cox, Ph.D. Molecular and cellular mechanisms of drug tolerance and dependence; neurochemical effects of opiate drugs and cocaine. John Sarvey, Ph.D. Synaptic transmission, second messengers, and protein synthesis in activity-dependent plasticity in the CNS. -Gene Expression and Neurologic Diseases: Esther Chang, Ph.D. Oncogenes and cancer; molecular genetic basis of familial cancer syndrome. Su Yun Chung, Ph.D. Homeobox gene expression in the developing central nervous system. Kathryn Holmes, Ph.D. Molecular mechanisms of coronavirus CNS demyelinating disease. Frank Jenkins, Ph.D. Molecular biology of the neurotropic virus, herpes simplex. -Neuropeptide Processing and Function: Vivian Hook, Ph.D. Prohormone processing enzymes in the synthesis of enkephalins, tachykinins and other peptides. Joseph McCabe, Ph.D. Histochemistry and molecular biology of hypothalamic-neurohyphysial hormone synthesis. Gregory Mueller, Ph.D. Neuroendocrine regulation, neuropeptide gene expression and gene transfer into neurons. Environmental Adaptation, Stress, and Injury: Andrew Baum, Ph.D. Environmental determinants of behavior and health; chronic stress and illness. Thomas Cote, Ph.D. Receptor regulation of GTP binding proteins that control second messenger systems. Brian Cox, Ph.D. Molecular and cellular mechanisms of drug tolerance and dependence; cellular adaptations to opiates and cocaine. Patricia A. Deuster, Ph.D. Regulation of neuroendocrine responses to exercise and environmental stress. Andrew Dutka, M.D. Cerebral ischemia; neurologic consequences of high pressure and decompression. Neil Grunberg, Ph.D. Psychological and biochemical mechanisms of appetitive and addictive behaviors. Harry Holloway, M.D. Clinical psychiatry; alcohol and drug misuse, post-traumatic stress. Ann E. Norwood M.D., MAJ, MC, USA. Clinical psychiatry: effects of HIV, and post-traumatic stress. Merrily Poth, M.D. Neuroendocrinology and neuroimmunology: interactions of cytokines and hormone systems. Mark Rollag, Ph.D. Role of the pineal in photoendocrine control of circadian and circannual biological rhythms. Andres Salazar, M.D., COL, MC, USA. Clinical studies of head injuries resulting from trauma and viral infections. John Sarvey, Ph.D. Effects of stress on synaptic plasticity in the CNS. Anna-Leena Siren, M.D., Ph.D. Cardiovascular regulation; hypertension and stroke. Lydia Temeshok, Ph.D. Psychosocial aspects of acquired immunodeficiency disease. Robert J. Ursano, M.D. Post-traumatic stress disorders. Neural Regulation of Physiologic Function: Howard Bryant, Ph.D. Electrophysiology of vascular smooth muscle; optical detection of electrical activity. Patricia A. Deuster, Ph.D. Regulation of neuroendocrine responses to exercise and environmental stress. Cinda Helke, Ph.D. Co-existence and regulation of neurotransmitters in autonomic control systems. Joseph McCabe, Ph.D. Histochemistry and molecular biology of hypothalamic-neurohyphysial hormone synthesis. Gregory Mueller, Ph.D. Neuroendocrine regulation, neuropeptide gene expression and gene transfer into neurons. John O'Neill, Ph.D. Neurotransmitter and ionic influences on cerebral blood flow. Merrily Poth, M.D. Neuroendocrinology and neuroimmunology: interactions of cytokines and hormone systems. Mark Rollag, Ph.D. Role of the pineal in photoendocrine control of circadian and circannual biolgical rhythms. Terez Shea-Donohue, Ph.D. Gastrointestinal physiology; role of mucosal eicosanoids in the neural regulation of gastrointestinal motility. Anna-Leena Siren, M.D., Ph.D. Cardiovascular regulation; hypertension and stroke. Clinical Neuroscience: Sidney M. Blair, M.D., Ph.D. Information processing and the effects of drugs and other treatments in psychiatric patients. Andrew Dutka, M.D. Cerebral ischemia; neurologic consequences of high pressure and decompression. Harry Holloway, M.D. Clinical psychiatry; alcohol and drug misuse, post-traumatic stress. Merrily Poth, M.D. Neuroendocrinology and neuroimmunology: interactions of cytokines and hormone systems. Michael Rosenberg, M.D. Neuro-opthalmology. Andres Salazar, M.D. Clinical studies of head injuries resulting from trauma and viral infections. Lydia Temeshok, Ph.D. Psychosocial aspects of acquired immunodeficiency disease. Robert J. Ursano, M.D. Post-traumatic stress disorders. From owner-neuroscience@net.bio.net Wed Feb 02 22:00:00 1994 Newsgroups: bionet.general,bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!uunet!mnemosyne.cs.du.edu!nyx10!anon1167 From: anon1167@nyx10.cs.du.edu (M) Subject: Hyperinnervation of cerebral blood vessels and CBF; Question. Message-ID: <1994Feb3.202248.10039@mnemosyne.cs.du.edu> X-Disclaimer: Nyx is a public access Unix system run by the University of Denver for the Denver community. The University has neither control over nor responsibility for the opinions of users. Sender: usenet@mnemosyne.cs.du.edu (netnews admin account) Organization: Nyx, Public Access Unix at U. of Denver Math/CS dept. Date: Thu, 3 Feb 94 20:22:48 GMT Lines: 9 Xref: biosci bionet.general:7554 bionet.neuroscience:2523 A colleague is examining the effects of neurotrophic factors (e.g. NGF) on sypathetic innervation of cerebral arteries. Apparently, NGF causes hyperinnervation of these arteries (very similar to a report by Isaacson et al. Neurobiology of Aging, 11: 51). The question is, is hyperinnervation of cerebral blood vessels associated with increased cerebal blood flow? ANy comments would be appreciated. Apparently there is not much literature on this topic. From owner-neuroscience@net.bio.net Wed Feb 02 22:00:00 1994 Path: biosci!daresbury!not-for-mail From: "wolfgang kusser" Newsgroups: bionet.neuroscience Subject: whales/submarine sound sources Date: 3 Feb 1994 20:06:17 -0000 Lines: 88 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2irlfp$j9d@mserv1.dl.ac.uk> Reply-To: wkusser@sol.uvic.ca X-Nupop-Charset: English Return-Receipt-To: wkusser@sol.uvic.ca Original-To: general@net.bio.net I received the following message on the marine mammals list. With permission of Lindy I forward this message and two corrections: >Sender: Marine Mammals Research and Conservation Discussion > >From: Lindy Weilgart/ Hal Whitehead >Subject: ATOC loud sounds >X-To: marmam@uvvm.uvic.ca >To: Multiple recipients of list MARMAM >I am quite concerned that the following issue has not received the >necessary publicity to lend itself to healthy dialog about this matter. >I am referring to two extremely loud sound sources that are starting >operation this month and next month, off 1) Kauai, Hawaii and 2) Pt. Sur, >California, which is an especially productive area rich in marine mammal >life. The speakers are to be placed at a depth of about 700-800 m just off >the coast of these two locations. The intensity of these sound sources will >be about 195 dB. This is about 10,000,000 times 120 dB (dB is a logarithmic >scale). 120 dB is the level of intensity at which even the comparatively >acoustically insensitive grey whale avoids noise. 120 dB is also the threshold >of pain for humans for airborne sound. The sound sources will be broadcasting >a fairly low-pitched sound, 70 Hz in frequency (human hearing extends down to >20 Hz). The sounds will remain on for a duration of 20 min, off for 4 hrs, >on for 20 min., etc. for the next few years at least and probably decades. >Sound sources like these are also proposed for the Atlantic and Indian oceans >as well, effectively assaulting the oceans of the world for the next decade >with noise. The sounds are loud enough to travel halfway around the world >using the deep sound channel. > The "ATOC" (Acoustic Thermography of Global Ocean Climate) Project's >purpose is supposedly to examine global temperature trends in the ocean, >as a way to monitor global warming, since the speed of sound increases with incr >easing water temperature. The multi-million dollar project is funded by >the U.S. Dept. of Defense (ARPA). Many climatologists question whether ATOC >is the best way to gauge global warming, especially as the source is located >so far (800 m) below the ocean surface. > As you know, whales, especially toothed whales, are critically dependent >on sound, often both for social communication as well as for food-finding. >Deep-diving whales are likely to be the species most affected by the sound. >Sperm whales regularly dive to 400 m depths and beyond, bringing them into >potentially close contact with the ATOC source. They are also extremely >acoustically sensitive, as anyone who has spent any time at all with them, >knows. Beaked whales could also be affected. Humpback whales off Newfound- >land have been found with shattered ear bones, likely as a result of sound >levels that were thought to be much less intense than those used by ATOC. > Studies of the effects of ATOC's sound sources on marine mammals are >being undertaken by ATOC. Unfortunately, these studies commence at roughly >the same time as the ATOC source begins operation, enabling little or no >baseline information to be gathered. It will be very hard to document any >clear disturbance since effects on marine mammals could be occurring beyond >the horizon from the source or at great depth. In addition, it will be >almost impossible to ascertain whether whales will be suffering habitual >hearing impairment. If whales are gradually being deafened by the sound >source, they will show less and less disturbance from the sound over time, >leading to erroneous conclusions of "no adverse effects". Alternatively, >one blast of 195 dB may be enough to permanently damage the hearing (or >cause other physiological damage), invalidating any results that occur >subsequently. WE JUST DO NOT KNOW, NOR ARE WE LIKELY TO FIND THIS OUT GIVEN THE > DIFFICULTY OF STUDYING SPERM WHALES, ESPECIALLY AT DEPTH OR BEYOND THE >HORIZON. Tags will hopefully help in answering this question, but as the >source cannot be moved, will provide few test cases. (0ne has to wait until >a tagged whale passes by at relatively close distance to the speaker). The >potential psychological stress of a sound that is regularly on for 20 min at >a time around the clock for years and years will be even more impossible to >evaluate. > The feasibility test for ATOC was conducted off Heard Island on an even >greater intensity level (around 215 dB) in 1991. This was done without filing >permits for marine mammals, and the sound was heard 18,000 km away in Bermuda >WITHOUT SIGNAL PROCESSING OR FILTERING NEEDED. One wonders why such a loud >sound was needed. > In conclusion, the most alarming aspect of this project is the dearth >of publicity it has received, considering its far-ranging potential implications > for marine mammals and marine life in general. The permits for the two sound >sources were filed and the Hawaii one has gone though a 30 day public comment >period on the Federal Register with hardly any comments noted! The California >30-day period on the Federal Register is happening now, I think. Please >give comments to NMFS or the Marine Mammal Commission SOON! > Lindy Weilgart and Hal Whitehead NEW MESSAGE: .....stuff deleted.... >Apparently, there >are two corrections to make. There apparently were some baseline studies >but I am not aware they were done on sperm whales and it certainly wasn't an >intensive effort. No attempt has been made to broadcast the sounds in a >more experimental setting, i.e. starting at a much lower level and only >turned on when the research animals were in the area. This desperately needs >to be done before the source is turned on in earnest (at proposed level and >duty cycle of 20 min. on 4 hrs off). One other correction: the Heard Island >study did have a permit, but many people agree that this was in name only-- >woefully inadequate. It definitely was rushed and pushed through prematurely. From owner-neuroscience@net.bio.net Wed Feb 02 22:00:00 1994 Path: biosci!CS.Arizona.EDU!math.arizona.edu!news.Arizona.EDU!hamblin.math.byu.edu!sol.ctr.columbia.edu!howland.reston.ans.net!nctuccca.edu.tw!TWNMOE10.Edu.TW!YMMCS023 From: YMMCS023@TWNMOE10.Edu.TW Newsgroups: bionet.neuroscience Subject: clinical genetics of psychiatry Date: Thu, 03 Feb 94 20:02:27 GMT Organization: MOE Computer Center, Taiwan Lines: 33 Message-ID: <16F52119D3.YMMCS023@TWNMOE10.Edu.TW> NNTP-Posting-Host: twnmoe10.edu.tw X-Newsreader: NNR/VM S_1.3.2 ======================================================================== From: YMMCS023@TWNMOE10.Edu.TW Path: TWNMOE10.Edu.TW!YMMCS023 Newsgroups: bionet.molbio.gene-linkage Subject: clinical genetics of psychiatry Message-ID: <16F5211304.YMMCS023@TWNMOE10.Edu.TW> Date: Thu, 03 Feb 94 19:33:18 GMT Organization: MOE Computer Center, Taiwan I am a clinical psychiatrist and interested in the genetics of psychiatric diso rders such as schizophrenia, bipolar disorder and Alzheimer's disease. I would like to initiate a collaborative study with a lab working on molecular genetics . I don't know what should I do first clinically and how could I persuade a lab reaearcher that I have interesting samples and deserve further study? In my country, the field of psychiatric genetics is still doubted by most psych iatrists, but most of them also addmit psychiatric patients with family history are frequently seen. How could I initiate a small projet to verify that schizop hrenia, bipolar disorder or Alzheimer's disease is somewhat a genetic disease i n this small country. (Although I know this issue has been repeadly studied wor ldwide) I realy hope someone would give me a guide to initiate this kind of pro gram, just a small initiation. Otherwise, we will keep blind and fearful to thi s area. For this weak point, most psychiatrists here are ambivalant embarassed in faceing questions relating to the genetics of psychiatric disorders. Any information will be greatly appreciated. CHEN-JEE HORNG, M.D. DEPARTMENT OF PSYCHIATRY VETERANS GENERAL HOSPITAL-TAIPEI TAIPEI, TAIWAN, R.O.C. E-MAIL: YMMCS023@TWNMOE10.EDU.TW FAX: 886-2-8742441 From owner-neuroscience@net.bio.net Wed Feb 02 22:00:00 1994 Path: biosci!CS.Arizona.EDU!math.arizona.edu!news.Arizona.EDU!hamblin.math.byu.edu!sol.ctr.columbia.edu!howland.reston.ans.net!torn!nermal.cs.uoguelph.ca!herman.cs.uoguelph.ca!pkotchap From: pkotchap@uoguelph.ca (Paul Kotchapaw) Newsgroups: bionet.neuroscience Subject: Hydrocephalus pt. w/120 IQ? Date: 3 Feb 1994 04:33:05 GMT Organization: University of Guelph Lines: 11 Message-ID: <2ipuq1$sfo@nermal.cs.uoguelph.ca> NNTP-Posting-Host: herman.cs.uoguelph.ca X-Newsreader: TIN [version 1.2 PL2] Yes, I recently saw a movie in one of my undergrad courses that documented three hydrocephalic individuals. One of which was a man from Denmark who acheived a bachelors degree in mathematics from a European University. I believe this could be the person you are looking for. I will try to find the name of the movie and post it for you. Paul Kotchapaw UofGuelph, BioSci pkotchap@uoguelph.ca From owner-neuroscience@net.bio.net Thu Feb 03 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!msuinfo!netnews.upenn.edu!NewsWatcher!user From: Lensch@chop.edu (M. William Lensch) Newsgroups: bionet.neuroscience Subject: Re: clinical genetics of psychiatry Followup-To: bionet.neuroscience Date: 3 Feb 1994 22:09:36 GMT Organization: U. of Penn./Neurology Lines: 44 Distribution: world Message-ID: References: <16F52119D3.YMMCS023@TWNMOE10.Edu.TW> NNTP-Posting-Host: 159.14.16.4 In article <16F52119D3.YMMCS023@TWNMOE10.Edu.TW>, YMMCS023@TWNMOE10.Edu.TW wrote: > > ======================================================================== > From: YMMCS023@TWNMOE10.Edu.TW > Path: TWNMOE10.Edu.TW!YMMCS023 > Newsgroups: bionet.molbio.gene-linkage > Subject: clinical genetics of psychiatry > Message-ID: <16F5211304.YMMCS023@TWNMOE10.Edu.TW> > Date: Thu, 03 Feb 94 19:33:18 GMT > Organization: MOE Computer Center, Taiwan > > I am a clinical psychiatrist and interested in the genetics of psychiatric diso > rders such as schizophrenia, bipolar disorder and Alzheimer's disease. I would > like to initiate a collaborative study with a lab working on molecular genetics > . I don't know what should I do first clinically and how could I persuade a lab > reaearcher that I have interesting samples and deserve further study? > > In my country, the field of psychiatric genetics is still doubted by most psych > iatrists, but most of them also addmit psychiatric patients with family history > are frequently seen. How could I initiate a small projet to verify that schizop > hrenia, bipolar disorder or Alzheimer's disease is somewhat a genetic disease i > n this small country. (Although I know this issue has been repeadly studied wor > ldwide) I realy hope someone would give me a guide to initiate this kind of pro > gram, just a small initiation. Otherwise, we will keep blind and fearful to thi > s area. For this weak point, most psychiatrists here are ambivalant embarassed > in faceing questions relating to the genetics of psychiatric disorders. > Any information will be greatly appreciated. > > > CHEN-JEE HORNG, M.D. > DEPARTMENT OF PSYCHIATRY > VETERANS GENERAL HOSPITAL-TAIPEI > TAIPEI, TAIWAN, R.O.C. > E-MAIL: YMMCS023@TWNMOE10.EDU.TW > FAX: 886-2-8742441 Dr. Horng, There is a physician at University of Utah, Dept. of Psychiatry (Salt Lake City, Utah U.S.A.) named Bill Bierly who is currently studying the molecular genetics of schizophrenia. Give him a call. I'm sure you can find a phone number for him as I do not have one. (He is a psychiatrist.) From owner-neuroscience@net.bio.net Thu Feb 03 22:00:00 1994 Path: biosci!s.u-tokyo!news.tisn.ad.jp!news.u-tokyo.ac.jp!wnoc-tyo-news!nec-tyo!nec-gw!sgiblab!munnari.oz.au!spool.mu.edu!howland.reston.ans.net!cs.utexas.edu!uunet!destroyer!jobone!ukma!eng.ufl.edu!usenet From: hager@iris.ee.ufl.edu (Todd J. Hager) Newsgroups: bionet.neuroscience Subject: Re: Hearing - up to date theories? Date: 4 Feb 1994 03:02:40 GMT Organization: University of Florida College of Engineering Lines: 8 Message-ID: <2isdsg$itk@bigguy.eng.ufl.edu> NNTP-Posting-Host: iris.ee.ufl.edu asks: >I am trying to find out about up to date theories of >hearing and cognition. There does not seem to be much >information around (here).. does anyone have any pointers. Try "Auditory Scene Analysis - The Perceptual Organization of Sound," by Albert Bregman, MIT Press, 1990. From owner-neuroscience@net.bio.net Thu Feb 03 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!network.ucsd.edu!sdcc12!jeeves!wsun From: wsun@jeeves.ucsd.edu (Fiberman) Newsgroups: bionet.neuroscience Subject: unit recording Message-ID: <60634@sdcc12.ucsd.edu> Date: 4 Feb 94 00:42:29 GMT Sender: news@sdcc12.ucsd.edu Organization: University of California, San Diego Lines: 8 Nntp-Posting-Host: jeeves.ucsd.edu Hello all, For the electrophysiologists out there: What is meant by single unit and multiple unit recordings? This is in reference to recording activity from cells in the brain. -fm From owner-neuroscience@net.bio.net Thu Feb 03 22:00:00 1994 Path: biosci!daresbury!mrccrc!news.dcs.warwick.ac.uk!warwick!uknet!pipex!howland.reston.ans.net!agate!library.ucla.edu!csulb.edu!paris.ics.uci.edu!ics.uci.edu!not-for-mail From: rmyers@ics.uci.edu (Richard E. Myers) Newsgroups: bionet.neuroscience Subject: paired-pulse facilitation / auditory tract Date: 3 Feb 1994 13:23:22 -0800 Organization: UC Irvine, Department of Information and Computer Science Lines: 23 Distribution: bionet Message-ID: <2irq0a$6d0@ics.uci.edu> Reply-To: rmyers@ics.uci.edu (Richard E. Myers) NNTP-Posting-Host: ics.uci.edu Keywords: paired-pulse auditory I'm trying to find information on the role of paired-pulse facilitation (PPF) in auditory processing. I've found one paper* that discusses PPF in the auditory nerve, but I am also interested in studies that characterize any PPF in the dorsal cochlear nucleus, medial geniculate body or auditory cortex. I would also appreciate any papers that speculate on the computational effect/purpose of PPF in the brain. Best Wishes, -- Richard * J.H. Siegel and E.M Relkin, "Evidence of presynaptic facilitation in primary cochlear afferent neurons." Hearing Research, 29 (1987) 169-177. ------------------------------------------------------------------------------- "Every day is alone in itself, whatever enjoyment I've had, and whatever sorrow I've had... it is like waking from a dream." -- H.M. ------------------------------------------------------------------------------- Richard Myers / CNLM / UC Irvine / Irvine, CA 92717 / 714-856-7473 From owner-neuroscience@net.bio.net Thu Feb 03 22:00:00 1994 Path: biosci!s.u-tokyo!news.tisn.ad.jp!news.u-tokyo.ac.jp!wnoc-tyo-news!nec-tyo!nec-gw!sgiblab!spool.mu.edu!howland.reston.ans.net!cs.utexas.edu!not-for-mail From: smgxt01@ucl.ac.uk (Dr Thomas Salt) Newsgroups: bionet.neuroscience Subject: Re: unit recording Date: 4 Feb 1994 03:36:04 -0600 Organization: Bloomsbury Computing Consortium Lines: 20 Sender: daemon@cs.utexas.edu Message-ID: <1994Feb4.042439.38483@ucl.ac.uk> References: <60634@sdcc12.ucsd.edu> NNTP-Posting-Host: cs.utexas.edu wsun@jeeves.ucsd.edu (Fiberman) writes: >Hello all, >For the electrophysiologists out there: What is meant by single >unit and multiple unit recordings? This is in reference to >recording activity from cells in the brain. >-fm Quite simple. Single Unit recording is from a single nerve cell (neurone) or fibre (usually with an extracellular electrode). multi-unit is when a single electrode picks up action potentials from several cells or fibres, and these are then seen as a collection of spikes on the recording: this is sometimes useful for looking at the population repsonse of a group of closely grouped cells (eg in a cortical area). Tom Salt. From owner-neuroscience@net.bio.net Thu Feb 03 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!uunet!world!news.mtholyoke.edu!nic.umass.edu!titan.ucs.umass.edu!not-for-mail From: nrc@titan.ucs.umass.edu (NEIL R CARLSON) Newsgroups: bionet.neuroscience Subject: Re: atlas mouse brain Date: 4 Feb 1994 09:54:58 -0500 Organization: University of Massachusetts, Amherst Lines: 22 Message-ID: <2itnk2$8fg@titan.ucs.umass.edu> References: <2ijebl$t0n@cismsun.univ-lyon1.fr> NNTP-Posting-Host: titan.ucs.umass.edu In article <2ijebl$t0n@cismsun.univ-lyon1.fr>, Pascal Girard wrote: > >I would like any information (references,availability,...) on a >good atlas of the mouse brain. > >thank you in advance > >Pascal Girard > I have two references; I do not know whether they are currently available. Slotnick, B.M. and Leonard, C.M. A Stereotaxic Atlas of the Albino Mouse Forebrain. Rockville, Md: Public Health Service, 1975. (U.S. Government Printing Office Stock Number 017-024-00491-0) Lehman, A. Atlas Stereotaxique du cerveau de la souris. Editions du Centre National de la Recherche Scientifique, 15, quai Anatole France, 75700 France, 1974. Neil Carlson, UMass/Amherst From owner-neuroscience@net.bio.net Thu Feb 03 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!uunet!hearst.acc.Virginia.EDU!murdoch!galen.med.Virginia.EDU!mew3e From: mew3e@galen.med.Virginia.EDU (Mark E. Warchol) Subject: Re: Neuron Message-ID: Sender: usenet@murdoch.acc.Virginia.EDU Organization: uva References: <2ihe8u$gaj@mserv1.dl.ac.uk> Distribution: bionet Date: Fri, 4 Feb 1994 20:33:48 GMT Lines: 14 I can think of 2 possibilities offhand: (1) Receptors for mitogenic growth factors are not expressed. Or the signaling pathways that are triggered by growth factors lead to different 'ends'. For example, NGF is a survival factor for neurons (through the trk receptor), but trk is mitogenic when expressed in other cells types. (2) The structural components of neurons (e.g., bundles of microtubles, etc.) will not permit neurons to attain a shape that permits cell division (that is , they can't 'round up'). Other suggestions ? From owner-neuroscience@net.bio.net Thu Feb 03 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!sol.ctr.columbia.edu!news.kei.com!uhog.mit.edu!nntp.club.cc.cmu.edu!godot.cc.duq.edu!pitt.edu!quadra900.neurobio.pitt.edu!user From: saul+@pitt.edu (Alan Saul) Newsgroups: bionet.neuroscience Subject: Re: unit recording Message-ID: Date: 4 Feb 94 16:19:00 GMT References: <60634@sdcc12.ucsd.edu> Sender: news+@pitt.edu Followup-To: bionet.neuroscience Organization: Bumbi ti siriri Lines: 29 In article <60634@sdcc12.ucsd.edu>, wsun@jeeves.ucsd.edu (Fiberman) wrote: > For the electrophysiologists out there: What is meant by single > unit and multiple unit recordings? This is in reference to > recording activity from cells in the brain. Microelectrodes can be placed in the brain to record extracellularly from neurons in the vicinity of their tips. Typically currents generated by action potential events in several cells close to the tip produce voltage changes detectable through the electrode. A number of parameters of the electrode determine what signals are picked up. Low-impedance electrodes sample from a larger volume and pick up smaller amplitude signals from many cells. This often takes the form of "hash", generalized neural activity not resolvable into action potentials. When spikes can be seen, they often arise from several cells, distinguishable by the size and shape of the action potential waveforms. This is multiunit activity. When one of these spikes can be isolated, either through luck, electrode characteristics (high impedance electrodes record from a smaller volume, picking up cells less often, but when they record cells they are generally well-isolated), or filtering and window-discrimination, you have single unit recording. Each of these has its place. Single unit recording is useful when studying single cells, of course. Multiunit recording can be appropriate for mapping studies, for instance. Hash is nice for figuring out where you are! -- Alan Saul saul+@pitt.edu OK Bye. From owner-neuroscience@net.bio.net Thu Feb 03 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!spool.mu.edu!sol.ctr.columbia.edu!news.unomaha.edu!cwis.unomaha.edu!brosenb1 From: brosenb1@cwis.unomaha.edu (BARBARA ANN ROSENBAUM) Subject: Please help with MS info Message-ID: <1994Feb4.053142.23822@news.unomaha.edu> Sender: news@news.unomaha.edu (UNO Network News Server) Organization: University of Nebraska at Omaha Date: Fri, 4 Feb 1994 05:31:42 GMT Lines: 14 A very dear friend of mine has recently been diagnosed with MS. She came to me to ask questions, however, I'm not a physiological or neuroscience biologist (more of an Earth scientist). Is there anyone here that might direct BOTH of us to information on MS that is written for the layperson? (other than a pamphlet asking for donations!) Any info. sources would be greatly appreciated. If you can spare the time, please e-mail me. Thanks for your time! Barb From owner-neuroscience@net.bio.net Fri Feb 04 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!usenet.ins.cwru.edu!po.CWRU.Edu!ery2 From: ery2@po.CWRU.Edu (Edwin R. Yeh) Newsgroups: bionet.neuroscience Subject: Re: Info wanted on biomechanics and neural processes Date: 5 Feb 1994 19:43:32 GMT Organization: Case Western Reserve University, Cleveland, OH (USA) Lines: 76 Message-ID: <2j0st4$3vc@usenet.INS.CWRU.Edu> References: <2ihbnp$jig@vixen.cso.uiuc.edu> Reply-To: ery2@po.CWRU.Edu (Edwin R. Yeh) NNTP-Posting-Host: owl.ins.cwru.edu In a previous article, A D Brazelton () says: >In article <2ifjeo$d04@news.u.washington.edu> meir@zoology.washington.edu (Eli Meir) writes: >> Does anyone out there know of references for experimental or >>theoretical work done on the effects of stress and strain on neuronal >>processes. I mean stress and strain in the biomechanical sense (ie - >>getting pulled and pushed around), and I'm not interested in stress >>activated channels, unless all channels are stress-activated - I'm >>interested in normal, everyday axons and dendrites, and what happens to >>their electrical properties when they get stretched or twisted. Any >>info would be appreciated. I have not heard of a particular references in the original questions; however, I think it is worthy of investigation. Can you also name a few situations (perhaps, certain injury or disease) that will actually cause mechanical stress on neurons? Since you are not interested in stress activated channels, I suggest that you redrive the cable equations with your assumptions on stretch. By that I mean starting from R = (ro * l)/A and proceeds with your assumption of delta l. You should be able to derive the passive model with Rl, Rm, and Cm with Ohm's Law, Kirchoff's Law and Conservation of Energy. This will tell you how the current will be conducting passively. Another consideration you might want to take into account is the changes in concentration releveant to the neural membrane in study. Since we know that the resting membrane potential is dictacted by the extracellular and intraceullar [K+],[Na+],[Cl-],[Anions] concentrations by their Nersnst Potential, the effect of stretching may have influence on the effective concentration since the volume is changed. Intuitively then, this will have an effect on the generation of action potential since the level of resting membrane potential will determine how likely this neuron will be perturbed to be deplorized -- in a sense then, the stretching may change its threshold of firing. >How is it possible to study the effects of mechanical stress on the >electrical properties of neuronal processes without considering >stretch-sensitive ion channels? Is there another stretch-sensitive >mechanism which does not involve ionic currents? > >Tony Brazelton >Neuronal Pattern Analysis Group, Beckman Institute >University of Illinois at Urbana-Champaign Usually in the theoretical modeling approach to the study, we divide things up and model it accrodingly to the phenomena we wish to observe. One of the way, we do that is by looking at the passive membrane properties (i.e. Cable Equations by Rall) and active membrane properties (such as Hudgkin-Huxley, Frankenhauser, or Sweeney.) Thus, what I wrote above can describe the effects of mechanical stress in the passive model. However, you are right in that, in order to get a better picture, we should look into the strech-sensitive ion channels. (BTW, aren't all ion channels potentially strech-sensitive? That is, by stetching, they may allow ions or even molecules that are normally too large to pass in or out thereby increase or decrease their concentration.) Below are a few references that may be of interest: Koch and Segev (eds.) _Methods in Neuronal Modeling_, MIT PRESS, 1989. -- Rall's Cable Equation is in one of the chapters, or you can directly look into the _Handbook of Physiology_. Plonsey and Barr. _Bioelectricity_, QP341.P734 1988 Let me know how your research turned out. Good luck. Edwin -- Edwin R. Yeh < ery2@po.cwru.edu > | Research Interests Dept. of Biomedical Engineering | + Direct Neural Control & Perception Case Western Reserve University | + Non-invasive Neuronal Data Acquistion Cleveland, OH 44106 | + Brain-Computer Interface From owner-neuroscience@net.bio.net Fri Feb 04 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!howland.reston.ans.net!darwin.sura.net!opusc!usceast!usceast!not-for-mail From: mani@usceast.cs.scarolina.edu (Subramani Mani) Newsgroups: bionet.neuroscience Subject: Ranking of Neuroscience grad programs--info wanted Date: 5 Feb 1994 12:57:47 -0500 Organization: University of South Carolina - Columbia - Computer Science Lines: 39 Message-ID: <2j0mmr$43g@litchi.cs.scarolina.edu> NNTP-Posting-Host: litchi.cs.scarolina.edu Hi Netfriends! I am planning to take up grad(doctoral) study in Neuroscience in a US university. I am an MD from India and will be getting a masters in computer science. My research area of interest is computational neuroscience. CAN SOMEBODY MAIL ME OFFICIAL/UNOFFICIAL RANKLIST OF NEUROSCIENCE PROGRAMS IN USA. PLEASE MENTION ALSO WHICH PROGRAMS HAVE COMP. NEUROSCIENCE AS A REASEARCH AREA. Any help greatly appreciated. Thanks for your time and effort in advance. Please email or post. -Subramani Mani *********************************************************************** Hobbies: music, movies, travel and photography! "JOY OF LIFE is what matters!" EMAIL: mani@usceast.cs.scarolina.edu US MAIL: 101 Pickens St. APT B4 Columbia SC 29205 Home Phone: (803)-254-3180 *********************************************************************** From owner-neuroscience@net.bio.net Fri Feb 04 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!uknet!pipex!howland.reston.ans.net!usenet.ins.cwru.edu!po.CWRU.Edu!ery2 From: ery2@po.CWRU.Edu (Edwin R. Yeh) Newsgroups: bionet.neuroscience Subject: Re: neuroprosthesis Date: 5 Feb 1994 19:06:58 GMT Organization: Case Western Reserve University, Cleveland, OH (USA) Lines: 39 Message-ID: <2j0qoi$1q9@usenet.INS.CWRU.Edu> References: <2ic956$4sj@usenet.ins.cwru.edu> <2ikdrl$ahs@bigblue.oit.unc.edu> Reply-To: ery2@po.CWRU.Edu (Edwin R. Yeh) NNTP-Posting-Host: owl.ins.cwru.edu In a previous article, dmmckali@gibbs.oit.unc.edu (David Mckalip) says: > >Is there any ongoing work a CWR on diaphragm pacing? I am currently >caring for 16 year old with complete C-2 quadriplegia secondary to a >cervical spine injury. She is completely ventilator-dependant. She is >only about two weeks out from her injury and may recover some function but >I doubt it. The literature is encouraging and I am considering venturing >into this in the future. > >David McKalip >Division of Neurosurgery >UNC-Chapel Hill >Chapel Hill, NC 27514 Currnetly there's a on-going research project that may be related to what you refereed to as diaphragm pacing. You may wish to send Dr. Mortimer (Dir. of Applied Neural Control), who is the primary investigator of the project, an e-mail (sorry, I don't have his address at hand.) A good friend of mine, Harish Aiyar < hxa14@po.cwru.edu > and his colleague Brian Schmit < bds@po.cwru.edu > are the two grad. students working on the project. I suggest that you send them a note to learn about the specifics of what they are doing. From what I knew (and I knew very little abouth this), they were experimenting placing a custom-designed stimulating electrode in the diaphragm of a dog using endoscopic surgical procedures. Brian is an expert in that. I will be sitting through their experiments which is two weeks from now. Maybe I'll know more about that, then. Regards, Edwin -- Edwin R. Yeh < ery2@po.cwru.edu > | Research Interests Dept. of Biomedical Engineering | + Direct Neural Control & Perception Case Western Reserve University | + Non-invasive Neuronal Data Acquistion Cleveland, OH 44106 | + Brain-Computer Interface From owner-neuroscience@net.bio.net Sat Feb 05 22:00:00 1994 Newsgroups: sci.math,bionet.neuroscience,alt.philosophy.objectivism,sci.fractals,sci.nonlinear,alt.consciousness,alt.psychoactives Path: biosci!news.cs.umb.edu!ctc.com!news.pop.psu.edu!news.cac.psu.edu!howland.reston.ans.net!vixen.cso.uiuc.edu!uwm.edu!fnnews.fnal.gov!unixhub!ditka!wetware!kaiwan.com!ming From: ming@kaiwan.com (ming of mongo) Subject: Re: Mandelbrot set & Platonic mathematics Message-ID: Followup-To: sci.math,bionet.neuroscience,alt.philosophy.objectivism,sci.fractals,sci.nonlinear,alt.consciousness,alt.psychoactives Organization: KAIWAN Internet Access Service (310 527-4279) References: <7572@eagle.ukc.ac.uk> Date: Sun, 6 Feb 1994 07:48:21 GMT Lines: 22 Xref: biosci sci.math:24756 bionet.neuroscience:2537 alt.philosophy.objectivism:8092 sci.fractals:2747 sci.nonlinear:538 alt.consciousness:1990 I'm glad you disagree with the Platonic view of mathmatics. (Plato was a professional wrestler, who's name translates roughly to "Big Guy", making him dangerously simmilar to Hulk Hogan! (How's that for an ad hominum argument?)) On the eyeball fractals, I am reminded of some good advice: Always keep an open mind, but not so open that your brain falls out. There are plenty of goofy pop science books on the subject of fractals and chaos, mostly writen by people who read other goofy pop science books. Chaos theory, or the little I understand of it, seems to be the most beautifull, and interesting branch of mathematics that i have ever seen. But, it's hard, much to hard to get from a dime novel science book. It is based on non-linear equasions, which are so dificult that approximation is the accepted way to deal with them, even among advanced mathematicians. I hope you retain your objectivity while reading on the subject. there are some good books on the subject, although they treat it only in a very general way. "Chaos" by James Gliek, is one that doesn't get bogged down in fantasy. It is mostly, however, about the scientists that brought chaos theory about, and not so much about the math. I hope this helps From owner-neuroscience@net.bio.net Sat Feb 05 22:00:00 1994 Path: biosci!s.u-tokyo!news.tisn.ad.jp!news.u-tokyo.ac.jp!sinetnews!daffy!uwvax!uwm.edu!cs.utexas.edu!howland.reston.ans.net!europa.eng.gtefsd.com!darwin.sura.net!pegasus.cc.ucf.edu!pegasus.cc.ucf.edu!not-for-mail From: ind00109@pegasus.cc.ucf.edu (Theresa Conrad) Newsgroups: bionet.neuroscience Subject: Need info cortical mapping Date: 5 Feb 1994 20:05:02 -0500 Organization: University of Central Florida Lines: 1 Message-ID: <2j1fnu$om9@pegasus.cc.ucf.edu> NNTP-Posting-Host: pegasus.cc.ucf.edu X-Newsreader: TIN [version 1.2 PL0] From owner-neuroscience@net.bio.net Sat Feb 05 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!noc.near.net!yale.edu!cs.yale.edu!dormnet.stu1.uconn.edu!BJuliano From: BJuliano@dormnet.stu1.uconn.edu (Bryan Juliano) Subject: Any good molecular modeling programs for neurobiologists? Message-ID: Lines: 5 Sender: news@cs.yale.edu (Usenet News) Nntp-Posting-Host: heckler.stu1.uconn.edu Organization: University of Connecticut Date: Sat, 5 Feb 1994 22:42:12 GMT Subject says it. What software is available and from where? Free or commercial. Bryan Juliano From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!spool.mu.edu!news.cs.indiana.edu!nstn.ns.ca!antigonish-ts-14.nstn.ns.ca!ncullen From: ncullen@fox.nstn.ns.ca (Nancy Cullen ) Newsgroups: bionet.neuroscience Subject: Info on spinal cord abscess Date: 6 Feb 1994 18:32:22 -0400 Organization: Nova Scotia Technology Network Lines: 9 Sender: news@nstn.ns.ca Distribution: world Message-ID: I had an abscess on my spine in December 1993 and I would appreciate receiving any information that is available on that ailment. I was told the night of my surgery that I would never walk again, but within 10 days I was using a walker, then I graduated to canes and can now walk on my own for short distances. The only other person that I have heard of having the same problem is now a parapalegic. Thank you in advance, Nancy Cullen From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!uknet!pipex!howland.reston.ans.net!darwin.sura.net!pegasus.cc.ucf.edu!pegasus.cc.ucf.edu!not-for-mail From: ind00109@pegasus.cc.ucf.edu (Theresa Conrad) Newsgroups: bionet.neuroscience Subject: Need info cortical mapping Date: 6 Feb 1994 21:31:46 -0500 Organization: University of Central Florida Lines: 1 Message-ID: <2j496i$fap@pegasus.cc.ucf.edu> NNTP-Posting-Host: pegasus.cc.ucf.edu X-Newsreader: TIN [version 1.2 PL0] From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Path: biosci!daresbury!not-for-mail From: Newsgroups: bionet.neuroscience Subject: Brain Slicers Date: 7 Feb 1994 09:02:31 -0000 Lines: 10 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2j5037$aqa@mserv1.dl.ac.uk> Original-To: "neur-sci@dl.ac.uk"@BINFG1.jrf.be Hello, I have been making hippocampal slices with a McIlwain tissue chopper for several years. People tell me that better and more consistent slices can be made with a Vibrotome. I see that Microslicers and Rotorslicers are also now available for this purpose. Is there anybody out there who has used these different techniques and would like to advise me which is the best? Many Thanks!! David Ashton. From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!howland.reston.ans.net!paladin.american.edu!darwin.sura.net!pegasus.cc.ucf.edu!pegasus.cc.ucf.edu!not-for-mail From: ind00109@pegasus.cc.ucf.edu (Theresa Conrad) Newsgroups: bionet.neuroscience Subject: Re: Need info cortical mapping Date: 6 Feb 1994 22:23:17 -0500 Organization: University of Central Florida Lines: 11 Message-ID: <2j4c75$gmj@pegasus.cc.ucf.edu> References: <2j1fnu$om9@pegasus.cc.ucf.edu> NNTP-Posting-Host: pegasus.cc.ucf.edu X-Newsreader: TIN [version 1.2 PL0] I am looking for information concerning cortical mapping, and the act that the amount of cortical area (specifically in the premotor cortex) dedicated to a certain body part increases with repeated usage of that part. J.T. Wall wrote an article that appeared in 1988 in _Trends in Neurosciences_, does anyone know of more recent research? I am interested in talking to someone regarding an article I am writing for an undergraduate magazine writing class. Please reply to ind00109@pegasus.cc.ucf.edu Thanks! From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!europa.eng.gtefsd.com!darwin.sura.net!pegasus.cc.ucf.edu!pegasus.cc.ucf.edu!not-for-mail From: ind00109@pegasus.cc.ucf.edu (Theresa Conrad) Newsgroups: bionet.neuroscience Subject: Seeking information on cortical mapping research Date: 7 Feb 1994 11:42:30 -0500 Organization: University of Central Florida Lines: 10 Message-ID: <2j5r1m$6h5@pegasus.cc.ucf.edu> NNTP-Posting-Host: pegasus.cc.ucf.edu X-Newsreader: TIN [version 1.2 PL0] I am looking for information on research that indicates that the amount of cortical area (specifically the promotor cortex) designated for a specific body part increases with regular use of that part. J.T. Wall wrote an article that appeared in _Trends in Neuroscience_ in 1988; does anyone know of more recent research? I would like to speak to someone regarding an article I'm writing for an undergraduate magazine writing class. Please reply ind00109@pegasus.cc.ucf.edu Thanks. From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Path: biosci!daresbury!not-for-mail From: C R Santhosh-Kumar Newsgroups: bionet.neuroscience Subject: subscription Date: 7 Feb 1994 20:15:09 -0000 Lines: 5 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2j67gd$k5q@mserv1.dl.ac.uk> Reply-To: C R Santhosh-Kumar Original-To: neuroscience@net.bio.net subscribe c.r. santhosh-kumar From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Path: biosci!daresbury!not-for-mail From: C R Santhosh-Kumar Newsgroups: bionet.neuroscience Subject: brain or serum bank Date: 7 Feb 1994 21:55:17 -0000 Lines: 6 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2j6dc5$ofj@mserv1.dl.ac.uk> Original-To: neuroscience@net.bio.net Does someone know of a serum or brain or spinal fluid bank of patients with various neurological disorders in the US? thanks santosh From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!daresbury!bioftp.unibas.ch!rc1.vub.ac.be!ub4b!EU.net!uknet!comlab.ox.ac.uk!gip From: gip@comlab.ox.ac.uk (Gary Powell) Subject: Research opportunities Message-ID: <1994Feb7.123710.13226@client9.comlab.ox.ac.uk> Originator: gip@client9.comlab Organization: Oxford University Computing Laboratory, UK Date: Mon, 7 Feb 1994 12:37:10 GMT Lines: 46 Home is where the brain is? WANTED: Opening in brain research for a mathematician/computer scientist. I am a recently graduated Computer Science / Mathematics graduate from Manchester University, England. I am very interested in getting involved in cognitive modelling research. By this I mean modelling aspects of the brain (e.g. visual processing, consciousness, language), based on solid neurophysiological data about the brain. The modelling would involve experimenting with plausible structures that could, in some way, be present in the brain. I am interested in modelling structures and processes only where there is enough data to enable these models to be scientifically assessed without resorting to too much handwaving. I would rather concentrate on quite small scale problems (such as stereoscopic vision) that are within reach of current understanding, rather than more major problems, such as the internal manipulation of knowledge, which we cannot yet tie down in any precise way. However, my background of everything beyond maths and computers (for instance a knowledge of brain physiology) is fairly scanty. This leads me to two questions: 1. Is it possible to jump straight into such research, and make a useful contribution, (i.e. start a PhD) without a more formal background in the subject? 2. Are there any taught courses, MSc's or the like, for scientists from a technical background who wish to become involved in brain research? I know that good work of the sort I am interested in is being conducted at Oxford, Sussex, Sheffield within the UK (particularly in vision research), but I am less sure of taught courses, or of work elsewhere. I am interested in courses both in the U.K. and the rest of the world. If there are any suitable courses, can anyone suggest how I might obtain funding, particularly for courses overseas. Finally, is this the best group to post this message to? Rather than flood tens of groups with the same message, I thought I'd start with this one group, and take it from there. Comments and suggestions of any sort welcome, Thanks, Gary Powell. From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!msuinfo!netnews.upenn.edu!news.cc.swarthmore.edu!news.haverford.edu!news From: Peter D. Brodfuehrer Newsgroups: bionet.neuroscience Subject: activity-dependent dyes Date: 7 Feb 1994 15:53:23 GMT Organization: Bryn Mawr College Lines: 7 Distribution: world Message-ID: <2j5o5j$2kt@saturn.haverford.edu> NNTP-Posting-Host: 165.106.10.122 X-UserAgent: Nuntius v1.1.1d24 X-XXDate: Mon, 7 Feb 94 14:49:50 GMT Has anyone tried using activity-dependent dyes, such as sulforohodamine 101 to determine the number of neurons that are active during the execution of a motor program? I know that that this technique has been used in the in vitro turtle brainstem-cerebellum preparation. I'm interested in trying it in the leech to identify populations of neurons in the head ganglion that are active during swimming. We have had very limited success so far. From owner-neuroscience@net.bio.net Sun Feb 06 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!news!eatworms.swmed.edu!leon From: leon@eatworms.swmed.edu (Leon Avery) Subject: xdatplot -- An X11 electrophysiology data viewer Message-ID: <1994Feb1.232452.100@news.uta.edu> Keywords: electrophysiology software, Xwindows Sender: news@news.uta.edu (USENET News System) Nntp-Posting-Host: eatworms.swmed.edu Organization: University of Texas Southwestern Medical Center Date: Tue, 1 Feb 1994 23:24:52 GMT Lines: 46 I have written a program, xdatplot, for examining electrophysiological data in the Xwindows environment. It is available by anonymous FTP or gopher from eatworms.swmed.edu. A portion of the README file follows. ************************************************************************ * xdatplot -- An X11 electrophysiology data viewer * ************************************************************************ xdatplot allows viewing and of large sequential sampled datasets, such as are generated by electrophysiological recording. The data can be filtered, printed on Postscript printers, or saved as MIF files that can be imported into FrameMaker. Some simple analysis (peak detection, mainly) is built in. What documentation there is is in Help windows; it's not very complete. ************************************************************************ * Warning: * ************************************************************************ xdatplot 0.1 is a very alpha release. It has been used for several months on a Sun SPARCStation 2 running SunOS 4.1.3 in my lab, and we haven't discovered any new bugs for a couple months. But it hasn't been tried on any other hardware or operating system (not even another Unix flavor). Anyway, as soon as new people use a program for new purposes, bugs come crawling out of the woodwork. So expect trouble. Please let me know if you install xdatplot or try to, whether or not you have any problems. At this early stage I'd like to keep track of all experience. Also, please let me know of any ideas for making xdatplot more useful. If it's easy, I'll do it. If it's hard, I'll tell you how I think you should do it. Even if you don't want to write programs, let me know; it may be easier than you think. (Maybe even so easy that I'll do it myself.) -- Leon Avery Department of Biochemistry University of Texas Southwestern Medical Center 5323 Harry Hines Blvd Dallas, TX 75235-9038 (214) 648-2420 (office) -2768 (lab) -8856 (fax) leon@eatworms.swmed.edu From owner-neuroscience@net.bio.net Mon Feb 07 22:00:00 1994 Newsgroups: sci.math,bionet.neuroscience,alt.philosophy.objectivism,sci.fractals,sci.nonlinear,alt.consciousness,alt.psychoactives Path: biosci!lhc!darwin.sura.net!howland.reston.ans.net!vixen.cso.uiuc.edu!uwm.edu!uwvax!gorgon!fullfeed!george From: george@fullfeed.fullfeed.com (George Hrabovsky) Subject: Re: Mandelbrot set & Platonic mathematics Message-ID: <1994Feb7.211152.10382@fullfeed.fullfeed.com> Organization: FullFeed Communications (Usenet/E-mail/UUCP +1 608 246 2701 demo) References: <7572@eagle.ukc.ac.uk> Date: Mon, 7 Feb 1994 21:11:52 GMT Lines: 36 Xref: biosci sci.math:24907 bionet.neuroscience:2552 alt.philosophy.objectivism:8157 sci.fractals:2759 sci.nonlinear:541 alt.consciousness:2022 In article ming@kaiwan.com (ming of mongo) writes: > I'm glad you disagree with the Platonic view of mathmatics. >(Plato was a professional wrestler, who's name translates roughly to "Big >Guy", making him dangerously simmilar to Hulk Hogan! (How's that for an >ad hominum argument?)) > > On the eyeball fractals, I am reminded of some good advice: >Always keep an open mind, but not so open that your brain falls out. > There are plenty of goofy pop science books on the subject of >fractals and chaos, mostly writen by people who read other goofy pop >science books. Chaos theory, or the little I understand of it, seems to >be the most beautifull, and interesting branch of mathematics that i have >ever seen. But, it's hard, much to hard to get from a dime novel science >book. It is based on non-linear equasions, which are so dificult that >approximation is the accepted way to deal with them, even among advanced >mathematicians. > I hope you retain your objectivity while reading on the subject. >there are some good books on the subject, although they treat it only in >a very general way. "Chaos" by James Gliek, is one that doesn't get >bogged down in fantasy. It is mostly, however, about the scientists that >brought chaos theory about, and not so much about the math. > I hope this helps > I have foud two really good books on Fractals and Chaos. The first is Ott's "Chaos in Dynamical Systems" which introduces the subject in a very clear way. The second (which I have loaned out and can't cite adequately) is Falconer's "Fractal Geometry" which is very deep and I suggest you study a little general topology before you tackle it. Both of these books I consider to be basic introductions, but you need to have a firm grasp of both ODE and PDE and a good grounding in topology and abstract (or modern) algebra would be good. GEH From owner-neuroscience@net.bio.net Mon Feb 07 22:00:00 1994 Newsgroups: sci.math,bionet.neuroscience,alt.philosophy.objectivism,sci.fractals,sci.nonlinear,alt.consciousness,alt.psychoactives Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!spool.mu.edu!torn!nott!cu23.crl.aecl.ca!news From: lipsettm@crl.aecl.ca (Mike Lipsett) Subject: Re: Readable intro book to nonlin. dyn. (was Re: Man. set &...) Message-ID: <1994Feb8.211511.1305@cu23.crl.aecl.ca> Sender: news@cu23.crl.aecl.ca (USENET News System) Nntp-Posting-Host: cp1455.crl.aecl.ca Organization: AECL Research X-Newsreader: Date: Tue, 8 Feb 1994 21:15:11 GMT Lines: 31 Xref: biosci sci.math:24991 bionet.neuroscience:2554 alt.philosophy.objectivism:8209 sci.fractals:2764 sci.nonlinear:545 alt.consciousness:2046 In article <1994Feb7.211152.10382@fullfeed.fullfeed.com> george@fullfeed.fullfeed.com (George Hrabovsky) writes: (stuff deleted... bandwidth) >I have found two really good books on Fractals and Chaos. >The first is Ott's "Chaos in Dynamical Systems" which introduces the subject >in a very clear way. >The second (which I have loaned out and can't cite adequately) is >Falconer's "Fractal Geometry" which is very deep and I suggest you study >a little general topology before you tackle it. >Both of these books I consider to be basic introductions, but you need to >have a firm grasp of both ODE and PDE and a good grounding in topology and >abstract (or modern) algebra would be good. > > GEH > IMHO, another good introductory book on nonlinear dynamics and chaos is Dynamics, The Geometry of Behavior Abraham and Shaw Addison-Wesley 1992 It is an extended tutorial, pictorially oriented. Phase space diagrams you can actually follow. Even fractal bifurcations! But the folksy style belies the complexity of the subject. Unless you are comfortable with ODE and PDE, the mechanical and electrical analogies might be hard to understand in a single reading. Check it out! Cheers, - Mike Lipsett From owner-neuroscience@net.bio.net Mon Feb 07 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!uunet!utcsri!newsflash.concordia.ca!wktsui From: wktsui@cs.concordia.ca (TSUI wan-kit daniel) Subject: Short program in Neuroscience Message-ID: Sender: usenet@newsflash.concordia.ca (USENET News System) Nntp-Posting-Host: alpha.cs.concordia.ca Organization: Computer Science, Concordia University, Montreal, Quebec Date: Tue, 8 Feb 1994 06:10:35 GMT Lines: 9 I am interested in know whether there is any school offering a program in neuroscience for those who has background in psychology and computer science and want to know more about neuroscience for further research purpose. I would like to spend 1-2 years in studying neuroscience. I have a master's degree in psychology and a graduate diploma in computer science. So if anyone knows any such program, please let me know. Thanks. D. Tsui From owner-neuroscience@net.bio.net Mon Feb 07 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!spool.mu.edu!caen!usenet.cis.ufl.edu!eng.ufl.edu!usenet From: hager@iris.ee.ufl.edu (Todd J. Hager) Newsgroups: bionet.neuroscience Subject: Re: Research opportunities Date: 8 Feb 1994 08:36:19 GMT Organization: University of Florida College of Engineering Lines: 34 Distribution: world Message-ID: <2j7iu3$1qj@bigguy.eng.ufl.edu> References: <1994Feb7.123710.13226@client9.comlab.ox.ac.uk> NNTP-Posting-Host: iris.ee.ufl.edu In article <1994Feb7.123710.13226@client9.comlab.ox.ac.uk> gip@comlab.ox.ac.uk (Gary Powell) writes: > I am a recently graduated Computer Science / Mathematics graduate > from Manchester University, England. I am very interested in > getting involved in cognitive modelling research. (stuff deleted) > 2. Are there any taught courses, MSc's or the like, for scientists > from a technical background who wish to become involved in > brain research? > > If there are any suitable courses, can anyone suggest how I might obtain > funding, particularly for courses overseas. > Comments and suggestions of any sort welcome, > > Thanks, > > Gary Powell. Here at the Computational Neuroengineering Laboratory at the University of Florida (U.S.A., we are involved in neural network modelling of the brain functions. The current research being conducted that is closest to what you describe is in musical pitch and timbre perception, and epileptic spike localization. The latter research has been pursued into the postdoctorate level by graduate students who had liitle or no background in brain anatomy when they started. Learn as you go... There is little here as of yet in the way of computer vision research (in this lab, that is, though U.F.'s comp. sci. dept. is heavily into it), but the machine hearing research tries to reproduce with neural nets the experimental results gathered from human listeners. Hope you find what you're looking for. TJH From owner-neuroscience@net.bio.net Mon Feb 07 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!vixen.cso.uiuc.edu!news.eecs.uic.edu!uicvm.uic.edu!earlham.edu!earlham.edu!nntp Newsgroups: bionet.neuroscience Subject: TIF images (sections) to 3-D? Message-ID: <1994Feb7.212126.870@earlham.edu> From: koprivu@earlham.edu Date: Mon, 7 Feb 94 21:22:08 -500 Distribution: world Organization: Earlham College Keywords: TIFF, 3D, 3-D, imaging, software, neural Nntp-Posting-Host: yang.earlham.edu Lines: 16 Hello, I was wondering whether anyone could answer this question for me. I am interested in making digital 3-D models ofvarious nuclei in the rat brain, and I have sections of the brain digitized in TIFF format. What software (shareware or not) would be able to do this for me? What would the steps be? Also I would be gratefull to anyone pointing me to a newsgroup/conference dealing specifically with neural imaging. Feel free to email: KOPRIVU@EARLHAM.EDU Thanks a lot. From owner-neuroscience@net.bio.net Mon Feb 07 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!not-for-mail From: sirosh@cs.utexas.edu (Joseph Sirosh) Newsgroups: bionet.neuroscience Subject: Re: Need info cortical mapping Date: 8 Feb 1994 16:29:53 -0600 Organization: CS Dept, University of Texas at Austin Lines: 9 Message-ID: <2j93p1$4sc@cascais.cs.utexas.edu> References: <2j1fnu$om9@pegasus.cc.ucf.edu> <2j4c75$gmj@pegasus.cc.ucf.edu> NNTP-Posting-Host: cascais.cs.utexas.edu The field of cortical plasticity has become a very intensive field of research recently. There was a special news article in Science about it in October 1992. If you do a medline search for articles by Merzenich-MM, or Kaas-JH, you'll find plenty of articles. Kaas wrote a review of the field in the Annual Review of Neurosciences in 1991. For the latest review of the field, you might want to refer to Sameshima and Merzenich's article published in Current Opinion in Neurobiology in March 1993. --Joseph From owner-neuroscience@net.bio.net Tue Feb 08 22:00:00 1994 Path: biosci!bloom-beacon.mit.edu!senator-bedfellow.mit.edu!wccf.mit.edu!karuzis From: karuzis@wccf.mit.edu (GLENN HOLM) Newsgroups: bionet.neuroscience Subject: Re: brain or serum bank Date: 8 Feb 1994 21:39 EST Organization: MIT - Whitaker College Lines: 31 Distribution: bionet Message-ID: <8FEB199421393686@wccf.mit.edu> References: <2j6dc5$ofj@mserv1.dl.ac.uk> NNTP-Posting-Host: wccf.mit.edu News-Software: VAX/VMS VNEWS 1.41 In article <2j6dc5$ofj@mserv1.dl.ac.uk>, C R Santhosh-Kumar writes... >Does someone know of a serum or brain or spinal fluid bank of patients with >various neurological disorders in the US? > >thanks >santosh > by coincidence, there's an article in today's (Feb 8) Boston Globe describing the brain bank at McLean Hospital locally in Belmont Mass and also mentioning the one at UCLA medical center. it describes their desire for donation of brains of patients who have had, particularly, neurological and psychjiatric diseases, and some of their research. spinal fluid is not mentioned. they have a bumper sticker "Research takes Brains call 1-800-BRAIN-BANK" i'm not associated with them, so can't comment on their research or policies other than saying donating brains to scientific research is a good thing. ------------------------------------------------------------------ |Glenn Holm Internet:karuzis@wccf.mit.edu| |M.I.T Dept. of Brain + Cog. Sci. This VAX doesn't do NeXTmail | |Cambridge, MA 02139 "Real Neuroscientists don't do gels!" | ------------------------------------------------------------------ From owner-neuroscience@net.bio.net Tue Feb 08 22:00:00 1994 Path: biosci!daresbury!not-for-mail From: Newsgroups: bionet.neuroscience Subject: unsubscribe Date: 9 Feb 1994 08:59:11 -0000 Lines: 3 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2ja8kv$pep@mserv1.dl.ac.uk> Original-To: neur-sci@dl.ac.uk unsubscribe From owner-neuroscience@net.bio.net Tue Feb 08 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!natinst.com!news.dell.com!swrinde!sdd.hp.com!col.hp.com!csn!ub!newserve!news.cc.geneseo.edu!bobolink.bio.geneseo.edu!beason From: Bob Beason Newsgroups: bionet.neuroscience Subject: J. Comp. Physiol. Date: 9 Feb 1994 17:55:53 GMT Organization: SUNY@Geneseo Lines: 5 Distribution: world Message-ID: <2jb839$jdc@news.cc.geneseo.edu> NNTP-Posting-Host: bobolink.cc.geneseo.edu X-UserAgent: Nuntius v1.1.1d24 X-XXMessage-ID: X-XXDate: Wed, 9 Feb 94 17:47:35 GMT I recall recently seeing that the editorial office of the J. Comp. Physiol. had changed, but now I cannot seem to find the new address. Would someone who has it please forward it to me? Thanks, Bob Beason From owner-neuroscience@net.bio.net Tue Feb 08 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!paperboy.amoco.com!apctrc!msc.edu!news.gac.edu!msus1.msus.edu!vax1.mankato.msus.edu!skipper Newsgroups: bionet.neuroscience Subject: Help!! Info needed about CAT SCAN/MRI Message-ID: <1994Feb8.091518.464@vax1.mankato.msus.edu> From: skipper@vax1.mankato.msus.edu Date: 8 Feb 94 09:15:18 -0500 Distribution: world Organization: Mankato State University Keywords: CAT SCAN/MRI Lines: 5 Please help me, I need any information on CAT SCAN/MRI for a project... Your quick response would be greatly appreciated.. Thank you for mailing your response to my e-mail Thanks again, Student in need of help From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!vixen.cso.uiuc.edu!uwm.edu!fnnews.fnal.gov!nntp-server.caltech.edu!rawlings From: rawlings@cco.caltech.edu (Jeffrey Rawlings) Newsgroups: bionet.neuroscience Subject: Help on candidacy exam: Memory and Plasticity Date: 10 Feb 1994 19:48:24 GMT Organization: California Institute of Technology, Pasadena Lines: 15 Message-ID: <2je328$m7t@gap.caltech.edu> NNTP-Posting-Host: sandman.caltech.edu Keywords: memory, synaptic plasticity, HM I am studying for my PhD candidacy exam in systems neurobiology. My topic for this week: memory, plasticity (particularly cortical), implicit memory, functions of the hippocampus and entorhinal cortex, priming, behavioral testing of memory, etc. (basically, anything at all relevant to learning, memory, and plasticity). I need to find the most important papers and hottest topics in these areas. Thanks for your help. -- Jeff (rawlings@cco.caltech.edu) -------------------------------------------------------------------- "Would you tell me, please, which way I ought to go from here?" "That depends a good deal on where you want to get to," said the cat. From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!uunet!pipex!uknet!EU.net!news.funet.fi!news.eunet.fi!news.spb.su!kaija!not-for-mail From: kt@valset.spb.su (Elena Oryel) Newsgroups: bionet.neuroscience Subject: Subj: CEREBRAL PALSY. We are looking science contacts (Russia, S-Petersburg) Date: 10 Feb 1994 22:00:11 -0000 Organization: VALSET Ltd. Lines: 13 Sender: news@owl.kaija.spb.su Distribution: world Message-ID: NNTP-Posting-Host: localhost Keywords: Science contacts X-Return-Path: newserv!kaija!valset!valset.spb.su!kt@kaija.spb.su Dear colleagues! I am posting on behalf of Institute of Experimental Medicine, St-Petersburg, Russia We are looking the addresses of rehabilitation science centers and laboratories which specialized in Cerebral Palsy. We are interested in getting into science contacts. Elena Oryol From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Path: biosci!daresbury!not-for-mail From: "I. Reichova" Newsgroups: bionet.neuroscience Subject: Sensory pathways to the neocortex Date: 10 Feb 1994 13:44:52 -0000 Lines: 17 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2jddok$mpr@mserv1.dl.ac.uk> Original-To: neur-sci@dl.ac.uk Dear netters, does anybody of you know about other pathways, if they ever exist, for sensory information flow to the neocortex, bypassing the thalamus? I do not mean aminergic modulatory pathways from the reticular formation or cholinergic from brainstem etc. Only sensory channels to the neocortex (for info processing) I have heard about the ventral polysynaptic tract but I have no more info on it. Many thanks for your help! Iva (student of thalamocortical dynamics) Iva Reichova Inst.Biophys. Acad.Sci.Czech Rep. Kralovopolska 135 Brno 612 65 Czech Rep. reichi@zoncna.ibp.cz From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!europa.eng.gtefsd.com!library.ucla.edu!csulb.edu!paris.ics.uci.edu!news.claremont.edu!nntp-server.caltech.edu!rawlings From: rawlings@cco.caltech.edu (Jeffrey Rawlings) Newsgroups: bionet.neuroscience Subject: Re: synaptic plasticity question, etc. Date: 10 Feb 1994 22:20:51 GMT Organization: California Institute of Technology, Pasadena Lines: 40 Message-ID: <2jec03$qu4@gap.caltech.edu> References: <1994Jan24.022849.786@csdvax.csd.unsw.edu.au> NNTP-Posting-Host: sandman.caltech.edu exb0405@csdvax.csd.unsw.edu.au (BARRY MANOR, NO DOUBT.) writes: >Something I'm curious about. During the course of the adult lifetime, say even >from minute to minute, does synaptic topography change dynamically ? Are >synapses 'broken' and formed as part of normal ongoing brain function ? I would say "probably." A couple of relevant lines of research: -In developing chick optic tectum, Scott Fraser and colleagues have imaged individual axonal arbors on a time scale of an hour (maybe finer, now). The results: there are different classes of branch points with different lifetimes, and you can get very significant remodeling of entire arbours over fairly short time spans. There is of course the assumption that these branches actually contain functional synapses, and this is in developing, not adult, chick. -In adult monkey, Mike Merzenich has demonstrated large changes in the receptive fields and maps in somatosensory cortex following training of the monkey. These changes occur (I think) on the order of weeks-months, although some may be faster. Presumably, synapses would have to be formed and broken on a large scale to get these changes. >When speaking of 'protien systhe{is' as a basis for some aspects of memory, >what exactly is meant ? I'm not sure, but this could be a reference to some forms of long-term potentiation (LTP). LTP is widely thought to be involved is some aspect of memory, but it's role is still unclear, I think. >Barry Manor Physiologist Cognitive Neuroscientist Biomedical Engineer. > PhD Student in Medicine @ University of Sydney, Australia. > Generally Confused, Lover of Bicycles, Bach and Beethoven. > DoD #620 'Zeph' Kawa Zephyr 750. She torques, I listen. > E-mail: b.manor@unsw.edu.au (University of New South Wales). -- Jeff (rawlings@cco.caltech.edu) -------------------------------------------------------------------- "Would you tell me, please, which way I ought to go from here?" "That depends a good deal on where you want to get to," said the cat. From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!paladin.american.edu!europa.eng.gtefsd.com!library.ucla.edu!agate!msuinfo!netnews.upenn.edu!cattell.psych.upenn.edu!marvit From: marvit@cattell.psych.upenn.edu (Peter Marvit) Newsgroups: bionet.neuroscience Subject: Re: Hearing - up to date theories? Date: 10 Feb 94 16:11:07 Organization: Psychology Dept, U. Pennsylvania Lines: 23 Message-ID: References: <2isdsg$itk@bigguy.eng.ufl.edu> NNTP-Posting-Host: cattell.psych.upenn.edu In-reply-to: hager@iris.ee.ufl.edu's message of 4 Feb 1994 03:02:40 GMT Let me second the recommendation for Moore's (third edition) book, "Introduction to the Psychology of Hearing." It tends to be the first place I go for references. It *is* a bit shy on the physiology side, however. Pickles is also good, but a bit dated already. If you're *really* interested in the physiology side, there are several new books out in the series edited by Edelman from Springer-Verlag (? I think). Expensive, though. A side note about hearing research. One of the major difficulties, IMHO, is physiological investigations are *much* more difficult than for vision. You can pop an eyeball out and it will still function. You can remove the retina and plop it into a petri dish and you can still record. However, the middle ear bones are the body's tiniest held together by even tinier muscles on the other side of a bony plate. The cochlea is a compressed fluid-filled chamber completely enclosed by bone. Just getting *at* the structures is a major undertaking and involves the loss of structural integrity at some point, let alone trying to directly stimultae or record! -Peter "sticking with human psychoacoutics" Marvit : Peter Marvit , Psychology Dept, Univ. of Penn : : 3815 Walnut St., Philadelphia, PA 19104 w:215/898-6274 fax:215/898-7301 : From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Path: biosci!lhc!darwin.sura.net!howland.reston.ans.net!pipex!uknet!daresbury!not-for-mail From: BOVETTO_SYLVIE%FACMED%ULAVAL@REDIRECTEUR.ULAVAL.CA Newsgroups: bionet.neuroscience Subject: 5HT-Hybridization Date: 10 Feb 1994 07:28:30 -0000 Lines: 13 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2jcnmu$6da@mserv1.dl.ac.uk> X-Incognito-Format: VERSION=1.60e ENCRYPTED=NO X-Incognito-SN: 104 Original-To: neuroscience@net.bio.net Dear readers, Does anyone do in situ hybridization with the mRNA of the 5-HT transporters and receptors ?. I am interested in the variation of their expression in response to physiological challenges. S. Bovetto Dpt. Physiology Sch. medecin Laval University E-MAIL : SBOVETTO@CAMPUS.ULAVAL.CA From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Path: biosci!daresbury!not-for-mail From: mbrande@aol.com Newsgroups: bionet.neuroscience Subject: San Diego 3D Imaging Group Date: 10 Feb 1994 22:53:28 -0000 Lines: 61 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2jedt8$bjv@mserv1.dl.ac.uk> Original-To: neur-sci@net.bio.net 2-10-94 PLEASE POST AND DISTRIBUTE WIDELY SAN DIEGO 3D IMAGING GROUP ALL ASPECTS ALL DISCIPLINES ALL PLATFORMS - MICROSCOPY - PHOTOGRAPHY - BIOMEDICAL IMAGING - RECONSTRUCTION SOFTWARE - GRAPHICS - HOLOGRAPHY - VIRTUAL REALITY ENVIRONMENTS 1994 Meeting Schedule: Place: Auditorium San Diego Supercomputer Center (SDSC) on UCSD campus Time: 6 pm Dates: The 4th Monday every month Sponsor: T. Todd Elvins, SDSC Parking: One day permit ($3.00) at Northview Dr. Information Booth or Parking meters ($0.25/15min, 2hr.max) M eetings are free and open to all To be assured, please confirm date/time by voice or email Jan 24 ORGANIZATIONAL MEETING Feb 28 Dr. Gary Fan (UCSD): Overview of 3D Confocal and Electr on Microscopy Dr. Robert Leif (Newport Instruments): SPIE Biomedical Imaging Meeting Report M ar 28 Apr 25 May 23 Jun No meeting Jul No meeting Aug 22 Sept 26 Oct 24 Nov 28 Dec ? PARTICIPATE IN A PROFESSIONAL GROUP FOCUSED ON CUTTING EDGE 3D IMAGING TECHNOLOGY: TOTAL MEMBERS TO DATE: LOCAL= 100 WORLDWIDE=189 VENDOR PARTICIPATION ENCOURAGED EMAIL REFLECTOR ESTABLISHED: NETWORK WITH OTHERS SERIOUSLY CONCERNED WITH 3D IMAGING TO BE PLACED ON EMAIL LIST: PLEASE SUBMIT YOUR (1)INTERNET EMAIL ADDRESS + (2) REAL NAME + (3) GEOGRAPHIC ADDRESS. CONTACT: MARC BRANDE, M.S. 7576 CHARMANT #117 EMAIL: mbrande@aol.com SAN DIEGO, CA 92122 VOICE: (619) 587-4830 From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!pipex!uunet!hearst.acc.Virginia.EDU!liberty!lorigt From: lorigt@liberty.uc.wlu.edu (Tyler Lorig) Subject: PSYCHOBIOLOGIST/NEUROSCIENTIST Opening Message-ID: <1994Feb8.213212.5628@liberty.uc.wlu.edu> Date: Tue, 8 Feb 1994 21:32:12 GMT Organization: Washington & Lee University X-Newsreader: TIN [version 1.2 PL2] Lines: 19 PSYCHOBIOLOGIST/NEUROSCIENTIST. The Department of Psychology, WASHINGTON AND LEE UNIVERSITY, announces a tenure-track, entry level position to begin 7/94. We seek a person specializing in the psychobiology of development with a Ph.D. and postdoctoral experience. The person will be expected to teach developmental courses and take part in our interdisciplinary Neuroscience Program. An ability to contribute to our Cognitive Science Program would be a plus. We seek a person who is committed to outstanding teaching and research in an undergraduate environment. The University is renovating its science center, and we will have state of the art research space, including excellent small-animal surgery/research facilities. Send application, vita, evidence of research activity, and letters of reference to: David G. Elmes, Head, Department of Psychology, Washington and Lee University, Lexington, VA 24450. e-mail: Elmes@Wlu.Edu From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!howland.reston.ans.net!agate!msuinfo!netnews.upenn.edu!cattell.psych.upenn.edu!marvit From: marvit@cattell.psych.upenn.edu (Peter Marvit) Newsgroups: bionet.neuroscience Subject: Re: Hearing - up to date theories? Date: 10 Feb 94 16:19:36 Organization: Psychology Dept, U. Pennsylvania Lines: 7 Message-ID: References: <2isdsg$itk@bigguy.eng.ufl.edu> NNTP-Posting-Host: cattell.psych.upenn.edu In-reply-to: hager@iris.ee.ufl.edu's message of 4 Feb 1994 03:02:40 GMT Ooops, I should also have pointed to "Listening" by Stephen Handel (1989 or so) as a nice overview, with a good section on music perception. -Peter "music cognition has its own literature" Marvit : Peter Marvit , Psychology Dept, Univ. of Penn : : 3815 Walnut St., Philadelphia, PA 19104 w:215/898-6274 fax:215/898-7301 : From owner-neuroscience@net.bio.net Wed Feb 09 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!sdd.hp.com!col.hp.com!csn!tali.hsc.colorado.edu!cosmt8.hsc.colorado.edu!claytonj From: Jerry Clayton Newsgroups: bionet.general,bionet.neuroscience Subject: Re: Hyperinnervation of cerebral blood vessels and CBF; Question. Date: 10 Feb 1994 06:24:38 GMT Organization: Univ. of Colorado Health Sci. Center Lines: 20 Distribution: world Message-ID: <2jcjv6$lml@tali.hsc.colorado.edu> References: <1994Feb3.202248.10039@mnemosyne.cs.du.edu> NNTP-Posting-Host: cosmt8.hsc.colorado.edu X-UserAgent: Version 1.1.3 X-XXMessage-ID: X-XXDate: Wed, 9 Feb 94 23:24:30 GMT Xref: biosci bionet.general:7684 bionet.neuroscience:2560 > Newsgroups: bionet.general,bionet.neuroscience ANON, A very interesting question. As neurobiologists poke around in the brain with growth factors etc. we must remain acutely aware of the possible non-specific effects of these compounds on the nervous system. I don't know the literature in this area but can offer a few unsupported thoughts on the subject. One would think that increased sympathetic innervation of cerebral blood vessels would result in increased vascular tone. This in turn could result in changes in cerebral blood flow/press. However, could it be possible that innervation changes of this sort would make the system just more sensitive to regulatory control. I guess it depends on how much of the normal tone is the result of symapthetic signaling. VERY INTERESTING! Certainly well worth studying in my opinion. What do you think? Jerry Clayton: claytonj@essex.hsc.colorado.edu (Univ. of Colo. Health Sci. Center; Denver, Colorado) From owner-neuroscience@net.bio.net Thu Feb 10 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!msuinfo!harbinger.cc.monash.edu.au!bunyip.cc.uq.oz.au!munnari.oz.au!newshost.anu.edu.au!huxley!bsf651 From: bsf651@huxley.anu.edu.au (Brian S Fletcher) Newsgroups: bionet.neuroscience Subject: Re: Brain Slicers Date: 11 Feb 94 06:22:55 GMT Organization: Australian National University Lines: 36 Distribution: bionet Message-ID: References: <2j5037$aqa@mserv1.dl.ac.uk> NNTP-Posting-Host: 150.203.2.12 writes: >Hello, >I have been making hippocampal slices with a McIlwain tissue chopper >for several years. People tell me that better and more consistent >slices can be made with a Vibrotome. I see that Microslicers and >Rotorslicers are also now available for this purpose. Is there >anybody out there who has used these different techniques and >would like to advise me which is the best? >Many Thanks!! >David Ashton. Hey David I have been doing my honours this past year and have been doing the majority of the work on brain slices (well, actually, the hippocampal section of a slice but same thing really). We have a Campden Instruments Vibroslicer and routinely cut 100 micron thick slices on it quite easily. Mind you I have done LOTS of slices and I do remember it being frustrating at first but so is every new technique. If you want to know a little more about it then email me, okay?? Hope it helps... Brian Fletcher Protein Dynamics Unit Department of Chemistry Australian National University Canberra Australia bsf651@cscgpo.anu.edu.au From owner-neuroscience@net.bio.net Thu Feb 10 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!uunet!world!galperin From: galperin@world.std.com (Geoffrey D Alperin) Subject: Re: synaptic plasticity question, etc. Message-ID: Organization: The World Public Access UNIX, Brookline, MA References: <1994Jan24.022849.786@csdvax.csd.unsw.edu.au> <2i8lj2$ijr@s.ms.uky.edu> Date: Fri, 11 Feb 1994 00:50:48 GMT Lines: 34 >Also, I agree with your bashing of reductionist modeling. You might feel >justified when you read about the ideas espoused by Gerald Edelman at the >"What is Life" meeting in Dublin (Sept. '93) described in an article ("What >Are We?...") in the January '94 issue of Science. Which January '94 issue of Science? From owner-neuroscience@net.bio.net Thu Feb 10 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!howland.reston.ans.net!wupost!kuhub.cc.ukans.edu!merkley From: merkley@kuhub.cc.ukans.edu Newsgroups: bionet.neuroscience Subject: EEG under anesthesia Message-ID: <1994Feb10.212432.58482@kuhub.cc.ukans.edu> Date: 10 Feb 94 21:24:32 CST Organization: University of Kansas Academic Computing Services Lines: 7 What happens to the EEG under general anesthesia? Thanks in advance, Matthew Merkley, M.D. merkley@kuhub.cc.ukans.edu Department of Psychiatry -------------------------- University of Kansas School of Medicine -- Wichita From owner-neuroscience@net.bio.net Thu Feb 10 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!daresbury!doc.ic.ac.uk!agate!ames!neuron.arc.nasa.gov!chimento From: chimento@neuron.arc.nasa.gov (Thomas Chimento) Subject: Re: synaptic plasticity question, etc. Message-ID: <1994Feb11.223023.9765@news.arc.nasa.gov> Sender: usenet@news.arc.nasa.gov Organization: NASA-Ames Biocomputation Center References: <1994Jan24.022849.786@csdvax.csd.unsw.edu.au> <2jec03$qu4@gap.caltech.edu> Date: Fri, 11 Feb 1994 22:30:23 GMT Lines: 46 In article <2jec03$qu4@gap.caltech.edu>, rawlings@cco.caltech.edu (Jeffrey Rawlings) writes: |> exb0405@csdvax.csd.unsw.edu.au (BARRY MANOR, NO DOUBT.) writes: |> |> >Something I'm curious about. During the course of the adult lifetime, say even |> >from minute to minute, does synaptic topography change dynamically ? Are |> >synapses 'broken' and formed as part of normal ongoing brain function ? |> |> -In adult monkey, Mike Merzenich has demonstrated large changes |> in the receptive fields and maps in somatosensory cortex following |> training of the monkey. These changes occur (I think) on the order of |> weeks-months, although some may be faster. Presumably, synapses |> would have to be formed and broken on a large scale to get these changes. |> >what exactly is meant ? |> -- |> Jeff (rawlings@cco.caltech.edu) |> -------------------------------------------------------------------- Re: M. Merzenich's work, It is not known if synapses are formed or broken inthe course of map changes. It *is* clear that the anatomical borders as defined by dendritic arborization spread do not correspond to the edges of maps. Therefore, all that is necessary is for existing synapses to become more or less active or in some manner relevant to the output of the system. Merzenich emphasizes activity dependent changes in cortical maps across standard anatomical boundaries. Clear cases of change in synpatic number with changes in sensory input are rather scarce. A fairly recent one is in the peripheral endorgans in the in rat vestibular system. The utricle and sacule are the two linear accelerometers in the inner ear. When rats were sent into space (zero gravity) on the space shuttle, the number of synapses within hair cells (the receptor cells) decreased. Opposite results were observed in rats exposed to hypergravity. See Ross, M.D. Morphological changes in rat vestibular system following wieghtlessness. J. Vestibular Res. 1993, 3:241-251. Thomas ******************************************************************** *Thomas C. Chimento Ph.D. Internet: chimento@neuron.arc.nasa.gov * *NASA, Ames Phone: 415-604-0376 (and Voice Mail) * *Biocomputation Center Fax: 415-604-3954 * *MS 239-11 * *Moffett Field, CA 94035-1000 * *+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+** * My thoughts, only my thoughts, and nothing but my thoughts. * ******************************************************************** From owner-neuroscience@net.bio.net Thu Feb 10 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!warwick!pipex!zaphod.crihan.fr!univ-lille1.fr!ciril.fr!news.imag.fr!univ-lyon1.fr!anapat1.univ-lyon1.fr!user From: belin@cimacpcu.univ-lyon1.fr (Belin) Newsgroups: bionet.neuroscience Subject: FRENCH GIRL NEED HELP FOR ENGLISH C.V. Followup-To: bionet.neuroscience Date: Fri, 11 Feb 1994 09:23:38 -0100 Organization: Universite Claude Bernard Lines: 6 Message-ID: NNTP-Posting-Host: anapat1.univ-lyon1.fr Hello, I want to make a curriculum vitae in english in order to search a post-doctoral position in USA but I am not very fluent in English ! If you could send me a model, I would be very grateful. My E-mail is : belin@cimacpcu.univ-lyon1.fr (subject : to Helene). Thanks a lot and if I can something for you ... Hlne Hardin. From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Path: biosci!REDIRECTEUR.ULAVAL.CA!RICHARD_DENIS%FACMED%ULAVAL From: RICHARD_DENIS%FACMED%ULAVAL@REDIRECTEUR.ULAVAL.CA Newsgroups: bionet.neuroscience Subject: Subscription Date: 12 Feb 1994 16:38:32 -0000 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 2 Sender: daemon@net.bio.net Distribution: bionet Message-ID: NNTP-Posting-Host: net.bio.net Please, subscribe me. Thanks From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!bcm!cs.utexas.edu!hermes.chpc.utexas.edu!hydra.acs.ttu.edu!news From: z3KEN@ttacs1.ttu.edu (Ken Brantley) Subject: Student Symposium Message-ID: Followup-To: bionet.neuroscience Sender: news@hydra.acs.ttu.edu (USENET News System) Organization: TTUHSC Date: Thu, 10 Feb 94 19:31:31 GMT Lines: 28 You are invited to the TEXAS TECH UNIVERSITY HEALTH SCIENCES CENTER Student Symposium and Research Day DOPAMINE SIGNALLING: A Model System for Understanding Human Disease at the Molecular Level Confirmed Symposium Speakers: David R. Sibley, PhD National Institue of Health Anthony A. Grace, PhD U Pittsburgh Peter W. Kalivas, PhD Washington State U Dwight C. German, PhD UT Southwestern Med School Keynote Speaker: Marc G. Caron, PhD Duke University Med Center Location: Texas Tech University Health Sciences Center, Lubbock, TX Date: February 24-25, 1994 Registration Fee: $10.00 (Pre-registration is required) For further information contact Adam Reinhart at TTUHSC Dept. of Cell Biology, Lubbock, TX 79430, (806) 743-2747 Internet: heajr@ttacs1.ttu.edu From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!warwick!uknet!pipex!howland.reston.ans.net!newsserver.jvnc.net!newsserver.cshl.org!newsserver.cshl.org!not-for-mail From: anderson@phage.cshl.org (John Anderson in Anderson Lab) Newsgroups: bionet.neuroscience Subject: Re: Sensory pathways to the neocortex Date: 12 Feb 1994 10:29:06 -0500 Organization: Cold Spring Harbor Lab Lines: 25 Distribution: bionet Message-ID: <2jisk2INN6p1@phage.cshl.org> References: <2jddok$mpr@mserv1.dl.ac.uk> NNTP-Posting-Host: phage.cshl.org "I. Reichova" writes: > does anybody of you know about other pathways, if they ever exist, >for sensory information flow to the neocortex, bypassing the thalamus? I do not >mean aminergic modulatory pathways from the reticular formation or cholinergic >from brainstem etc. Only sensory channels to the neocortex (for info processing) >I have heard about the ventral polysynaptic tract but I have no more info on it. >Iva Reichova I tried email but the message bounced. On page 335 of PRINCIPALS OF NEURAL SCIENCE 3rd ed by Kandel, Schwartz, and Jessell it says: "The only exception [to sensory systems passing through the thalamus on the way to the cortex] is the olfactory system, which transmits sensory information from the periphery directly to the primitive cortex of the medial temporal lobe." I hope this is helpful. -- John E. Anderson 1 Bungtown Road Beckman Neuroscience Center Cold Spring Harbor, NY 11724-2220 Cold Spring Harbor Laboratory FAX 516-367-8873 From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!warwick!uknet!pipex!howland.reston.ans.net!vixen.cso.uiuc.edu!sdd.hp.com!saimiri.primate.wisc.edu!xanth.cs.odu.edu!concert!bigblue.oit.unc.edu!gibbs!dmmckali From: dmmckali@gibbs.oit.unc.edu (David Mckalip) Newsgroups: bionet.neuroscience Subject: Re: EEG under anesthesia Date: 11 Feb 1994 16:31:46 GMT Organization: University of North Carolina, Chapel Hill Lines: 14 Message-ID: <2jgbti$in3@bigblue.oit.unc.edu> References: <1994Feb10.212432.58482@kuhub.cc.ukans.edu> <2jgb77$q4o@bigblue.oit.unc.edu> NNTP-Posting-Host: gibbs.oit.unc.edu >>What happens to the EEG under general anesthesia? >Overall, General anesthesia produces a slowing of the wave activity. >....variable depending on locations. Sorry, that should read "...depending on ANESTHETIC AGENT" not "location" David McKalip Division of Neurosurgery UNC-Chapel Hill From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Path: biosci!DELPHI.COM!BRUNKER From: BRUNKER@DELPHI.COM Newsgroups: bionet.neuroscience Subject: Structured water? Date: 12 Feb 1994 12:07:18 -0000 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 13 Sender: daemon@net.bio.net Distribution: bionet Message-ID: <01H8SF7RKEGM91WEKJ@delphi.com> NNTP-Posting-Host: net.bio.net Please, does anyone here know of a concept called "structured water"? I gather that it relates to the orientation of individual water molecules to some protein structures and may have some application to anesthesia/neuron interactions...but unfortunately there doesn't seem to be much in the literature (at least that I can find). Any explanations/citations you may have will be delightedly accepted. Very sincerely Marla Brunker From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Path: biosci!NET.BIO.NET!biosci-help From: biosci-help@NET.BIO.NET (BIOSCI Administrator) Newsgroups: bionet.neuroscience Subject: test 2 of neur-sci@net.bio.net Date: 12 Feb 1994 05:25:14 -0000 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 2 Sender: daemon@net.bio.net Distribution: bionet Message-ID: Reply-To: biosci-help@net.bio.net NNTP-Posting-Host: net.bio.net test 2 of neur-sci@net.bio.net From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!uknet!pipex!howland.reston.ans.net!cs.utexas.edu!swrinde!sgiblab!sgigate.sgi.com!olivea!decwrl!decwrl!concert!bigblue.oit.unc.edu!gibbs!dmmckali From: dmmckali@gibbs.oit.unc.edu (David Mckalip) Newsgroups: bionet.neuroscience Subject: Re: Info on spinal cord abscess Date: 7 Feb 1994 16:22:00 GMT Organization: University of North Carolina, Chapel Hill Lines: 43 Message-ID: <2j5pr8$5b9@bigblue.oit.unc.edu> References: NNTP-Posting-Host: gibbs.oit.unc.edu In article , Nancy Cullen wrote: >I had an abscess on my spine in December 1993 and I would appreciate >receiving any information that is available on that ailment. I was told the >night of my surgery that I would never walk again, but within 10 days I was >using a walker, then I graduated to canes and can now walk on my own for >short distances. The only other person that I have heard of having the same >problem is now a parapalegic. > >Thank you in advance, >Nancy Cullen You are quite fortunate. From your description, you probably had an epidural abscess of the thoracic spinal cord. This is a collection of infected material (mostly pus) that accumulates over the meningeal lining of the spinal cord, the dura mater. It is usually caused by Staphylococcus aureus, but a number of different organisms have been described. There is usually a history of an infection somewhere else in the body like the bladder, sinuses, teeth, adjacent bone etc. This often occurs in diabetics and in those with chronic renal failure (Don't worry, you would likely already be on dialysis if you had this). It can result from infected I.V. sites or in I.V. drug abusers and alcoholics. However, upt to 15-30 percent of patients will have no risk factors identified. Given your excellent outcome, your surgeons must have done a good job diagnosing you early. Your prognosis is likely excellent considering your progress so far. You usually will see improvement of function up to a year or so after a spinal cord injury. You likely will require antibiotics for 4 - 12 weeks and will require routine follow-up x-rays to rule out any evidence of continued or new bony infection. You may also need an MRI, but that is very variable depending on outcome. Different patients have different outcomes depending on the rapidity of diagnoses, degree of inital damage and other health factors. Please note I cannot prognosticate about you specifically but only provide general info based on what you have posted. Nor should my remarks be used a medical advice or be considered to reflect the opinions of the University of North Carolina or my department. Good luck, David McKalip, M.D. Division of Neurosurgery UNC-Chapel Hill From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!daresbury!doc.ic.ac.uk!uknet!pipex!howland.reston.ans.net!vixen.cso.uiuc.edu!uwm.edu!daffy!uwvax!uchinews!cdsmail!timbuk.cray.com!hemlock.cray.com!bard.uk.cray.com!uu6 From: uu6@bard.uk.cray.com (Tony McDonough) Subject: ALS questions Message-ID: <1994Feb11.111950.19997@bard.cray.com> Lines: 56 Nntp-Posting-Host: globe.uk.cray.com Organization: Cray Research (UK) Ltd X-Newsreader: TIN [version 1.2 021193BETA PL3-CRIb] Date: 11 Feb 94 11:19:50 GMT I am an ALS patient and I am trying to gain a clearer understanding of this disease. If I may, I have listed some questions which I would like some help with. I would appreciate any help anyone can offer. I apologise if some of these sound dumb but my background is electronics and computing not neuroscience, but I am learning fast. 1. ALS appears to damage the large neurones in the anterior grey matter and interneurones both of which are believed to be glycinergic. ( Hayashi et al 1980 ) It was found that the glycinergic receptors demonstrated reduced bindings. The cholinergic, dopaminergic, GABAergic and beta-adrenergic receptor bindings were normal. Is this still the current school of thought and is it true that ALS is limited in this way? 2. In the familial case of ALS it was discovered that the SOD gene was mutated. It was demonstrated that the level of SOD was reduced in these cases. However it was discovered that this reduced level exists in people prior to the onset of ALS symptoms. This raises some questions. a) Is it the case that the mutation does not cause ALS but simply makes people more susceptible to the disease. If this is the case what might it be that triggers this transition? b) Do we know if there is anyone who has the mutation and the reduced SOD level, but has never contracted ALS? Also is it possible to correlate the onset with the proportion of reduced SOD levels in individuals? Is there a critical level? c) Could it be that SOD gene mutation is purely coincidental and is not related to the disease onset? 3. There is much talk in the medical community at present about neurotrophic factors. It has been said that ALS is likely to be one of the first disorders to benefit from nerve growth factors because crossing the blood brain barrier is not necessary. I am not clear on this. If the neurones are dead how can they be revived? Indeed are they dead or simply comatosed in some way? Also what decides whether they live or die? What is the criteria for deciding against growth or death? 4. Finally people talk of ALS as if it were one disease with a variety of symptoms. Is it not possible that we are looking at range of different diseases but with similar symptoms? Do we need to improve diagnostic techniques if we are going to make treatment effective for individuals? Hopefully I have not offended anyone with these fairly basic questions but I am trying to learn as much as possible about this disorder. This is prior to submitting myself to various drug trials and potential treatments, but I would like to understand a little more. Having said that time is of the essence and maybe it is too late for me. Perhaps I am an optimist but I do feel we are the verge of some breakthroughs at last, which could help others. Regards Tony Internet mail address-Tony.McDonough@cray.com From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!warwick!uknet!pipex!howland.reston.ans.net!vixen.cso.uiuc.edu!sdd.hp.com!saimiri.primate.wisc.edu!xanth.cs.odu.edu!concert!bigblue.oit.unc.edu!gibbs!dmmckali From: dmmckali@gibbs.oit.unc.edu (David Mckalip) Newsgroups: bionet.neuroscience Subject: Re: EEG under anesthesia Date: 11 Feb 1994 16:19:51 GMT Organization: University of North Carolina, Chapel Hill Lines: 29 Message-ID: <2jgb77$q4o@bigblue.oit.unc.edu> References: <1994Feb10.212432.58482@kuhub.cc.ukans.edu> NNTP-Posting-Host: gibbs.oit.unc.edu In article <1994Feb10.212432.58482@kuhub.cc.ukans.edu>, wrote: >What happens to the EEG under general anesthesia? >Thanks in advance, > >Matthew Merkley, M.D. merkley@kuhub.cc.ukans.edu > Department of Psychiatry -------------------------- > University of Kansas School of Medicine -- Wichita > Overall, General anesthesia produces a slowing of the wave activity. However, the degree of slowing, the anatomical locations and the rate are variable depending on locations. We routinely use EEG during carotid endarterectomy (removal of carotid artery atherosclerotic plaque) to monitor for cerebral ischemia during carotid clamping. Patients are generally kept as light as possible during the operation to preserve EEG waveforms. If the brain can tolerate the loss of flow from one artery due to intact collateral flow through the circle of willis, no EEG changes are seen. However, if the brain becomes ischemic, the EEG waveforms slow and flatten. A shunt is then placed to bypass the clamped artery. That about taps my knowledge on the subject. A good reference for review is a chapter in "CLINICAL NEUROANESTHESIA". Cucchiara, Roy F., Michenfelder, J.D. 1990. Published by Churchill Livingstone, New York, Edinburgh, London, Melbourne. David McKalip Division of Neurosurgery UNC-Chapel Hill From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Path: biosci!NET.BIO.NET!biosci-help From: biosci-help@NET.BIO.NET (BIOSCI Administrator) Newsgroups: bionet.neuroscience Subject: test of neur-sci@net.bio.net Date: 12 Feb 1994 02:41:43 -0000 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 2 Sender: daemon@net.bio.net Distribution: bionet Message-ID: Reply-To: biosci-help@net.bio.net NNTP-Posting-Host: net.bio.net test of neur-sci@net.bio.net From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!daresbury!doc.ic.ac.uk!uknet!pipex!howland.reston.ans.net!paladin.american.edu!darwin.sura.net!news.gdb.org!dev.gdb.org!danj From: danj@dev.gdb.org (Dan Jacobson) Subject: Re: TIF images (sections) to 3-D? Message-ID: <1994Feb11.184803.21828@news.gdb.org> Sender: news@news.gdb.org Nntp-Posting-Host: dev.gdb.org Organization: The Johns Hopkins University - Genome Data Base (GDB) Date: Fri, 11 Feb 1994 18:48:03 GMT Lines: 26 privu@earlham.edu writes: >I was wondering whether anyone could answer this question for me. I am >interested in making digital 3-D models ofvarious nuclei in the rat >brain, and I have sections of the brain digitized in TIFF format. What >software (shareware or not) would be able to do this for me? What would >the steps be? > >Also I would be gratefull to anyone pointing me to a newsgroup/conference >dealing specifically with neural imaging. Convolution/Deconvolution type operations - Khoros probably has some routines to do this type of thing, Xlips may do this sort of thing too. A good newsgoup for this type of question is sci.image.processing, you might try alt.image.medical as well. Best of luck, Dan Jacobson danj@gdb.org Johns Hopkins University From owner-neuroscience@net.bio.net Fri Feb 11 22:00:00 1994 Path: biosci!bloom-beacon.mit.edu!nic.hookup.net!europa.eng.gtefsd.com!howland.reston.ans.net!pipex!bnr.co.uk!corpgate!concert!bigblue.oit.unc.edu!tbd From: tbd@med.unc.edu (Tristan B. Davies) Newsgroups: bionet.neuroscience,alt.human-brain,alt.brain,misc.forsale,triangle.forsale Subject: Excellent Neuro Book For Sale Followup-To: bionet.neuroscience Date: 9 Feb 1994 22:02:54 GMT Organization: the key to a useful life...not Lines: 33 Distribution: na Message-ID: <2jbmie$gf2@bigblue.oit.unc.edu> NNTP-Posting-Host: hasty.med.unc.edu Originator: tbd@hasty Xref: biosci bionet.neuroscience:2580 misc.forsale:44760 Here's the scoop: NEUROBIOLOGY OF HEARING: THE CENTRAL AUDITORY SYSTEM Edited by R.A. Altschuler et al, Raven Press, 1991. This is an excellent collection of review chapters on the auditory system, from cochlear nucleus to auditory cortex, written by the outstanding authors in each field. I purchased it new in 1991, and have not used it at all, so it's still in perfect condition. New, it costs $110, but I'll let it go at $60. FYI, the reason I never used it much is that I switched labs soon after I bought the book, to a lab working on an entirely different topic. And now I'm about to get out of science for good, so there seems little reason for me to keep it when there are probably other students of the auditory system who could use it. So if you're interested, drop me a line at tbd@med.unc.edu I'll be happy to provide more information to help you decide. Thanks, Tristan -- /\//\\/\\//\//\\/\\//\//\\/\\//\//\\/\\//\//\\/\\//\//\\/\\//\//\\/\\//\//\\/\ tristan davies........................................ wtvd newschannel eleven grblb blabt unt mipt speeb!! oot piffoo blabboo... said opus, and I agree. \/\\//\//\\/\\//\//\\/\\//\//\\/\\//\//\\/\\//\//\\/\\//\//\\/\\//\//\\/\\//\/ From owner-neuroscience@net.bio.net Sat Feb 12 22:00:00 1994 Path: biosci!bcm!cs.utexas.edu!uwm.edu!uwvax!skool.ssec.wisc.edu!tobis From: tobis@skool.ssec.wisc.edu (Michael Tobis) Newsgroups: sci.math,bionet.neuroscience,alt.philosophy.objectivism,sci.fractals,sci.nonlinear,alt.consciousness,alt.psychoactives Subject: Re: Mandelbrot set & Platonic mathematics Date: 13 Feb 1994 02:49:30 GMT Organization: U.Wis.-Madison; Atmospheric & Oceanic Sciences Lines: 29 Distribution: world Message-ID: <2jk4fq$2ft@spool.cs.wisc.edu> References: <7572@eagle.ukc.ac.uk> Reply-To: tobis@skool.ssec.wisc.edu NNTP-Posting-Host: skool.ssec.wisc.edu Xref: biosci sci.math:25542 bionet.neuroscience:2588 alt.philosophy.objectivism:8319 sci.fractals:2806 sci.nonlinear:592 alt.consciousness:2126 In article , ming@kaiwan.com (ming of mongo) writes: |> There are plenty of goofy pop science books on the subject of |> fractals and chaos, mostly writen by people who read other goofy pop |> science books. Chaos theory, or the little I understand of it, seems to |> be the most beautifull, and interesting branch of mathematics that i have |> ever seen. But, it's hard, much to hard to get from a dime novel science |> book. It is based on non-linear equasions, which are so dificult that |> approximation is the accepted way to deal with them, even among advanced |> mathematicians. Well, sorta. The results of the tehorems about chaotic systems are not approximate. Otherwise, nicely said. |> I hope you retain your objectivity while reading on the subject. |> there are some good books on the subject, although they treat it only in |> a very general way. "Chaos" by James Gliek, is one that doesn't get |> bogged down in fantasy. It is mostly, however, about the scientists that |> brought chaos theory about, and not so much about the math. Gleick's book is just as bad as the rest. If you have a little math (undergrad calculus would do) and really want an idea what it is about, read Ian Stewart's _Does God Play Dice?_ If you CAN'T read that book, kindly refrain from mentioning "chaos theory" publicly. I especially wish Michael Crichton and Steven Spielberg had taken this advice. mt what a wierd list of newsgroups... From owner-neuroscience@net.bio.net Sat Feb 12 22:00:00 1994 Newsgroups: bionet.neuroscience Path: biosci!daresbury!doc.ic.ac.uk!agate!howland.reston.ans.net!cs.utexas.edu!swrinde!sgiblab!gatekeeper.us.oracle.com!decwrl!decwrl!world!galperin From: galperin@world.std.com (Geoffrey D Alperin) Subject: Re: Info on working memory Message-ID: Organization: The World Public Access UNIX, Brookline, MA References: <2ih7ir$brc@mserv1.dl.ac.uk> Distribution: bionet Date: Sun, 13 Feb 1994 02:31:09 GMT Lines: 11 writes: > But what I want to know is the recent research and how it is >progressing. I know a Baddeley's book "Working Memory"(though I >don't have or read.), but I'm afraid it's a bit (only a bit) old. > Anyone gives me a good pointer ? I believe the September 1992 issue of Scientific American has an article on working memory by a researcher in the field. (Patricia ...?) I'm not sure if it goes into the level of detail you would like. I'll check. From owner-neuroscience@net.bio.net Sat Feb 12 22:00:00 1994 Path: biosci!FOX.NSTN.NS.CA!ewright From: ewright@FOX.NSTN.NS.CA ("Edwin Wright") Newsgroups: bionet.neuroscience Subject: Neo-neocortex Date: 13 Feb 1994 21:55:02 -0000 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 20 Sender: daemon@net.bio.net Distribution: bionet Message-ID: <64516.ewright@fox.nstn.ns.ca> NNTP-Posting-Host: net.bio.net In Eccles' recent writings, he describes the so-called "neo-neocortex" as that part of the neocortex which is highly developed in humans but only marginally developed in animals such as the gorilla. Does anyone know (a) any references which comprehensively delineate the anatomy and physiology of the neo-neocortex, and (b) any references that list genes and proteins associated with the neo-neocortex? Regards, ------- Edwin Wright 85 Spinnaker Drive, A-602 Halifax, Nova Scotia CANADA B3N 3E3 Telephone: (902) 477-5037 Email: ewright@fox.nstn.ns.ca =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= From owner-neuroscience@net.bio.net Sat Feb 12 22:00:00 1994 Path: biosci!daresbury!doc.ic.ac.uk!agate!howland.reston.ans.net!cs.utexas.edu!swrinde!sgiblab!sgigate.sgi.com!olivea!news.bu.edu!nntp.bu.edu!tal From: tal@acs.nntp-read.bu.edu (Doron Tal) Newsgroups: bionet.neuroscience Subject: Hodgkin-Huxley CNS neuron code Date: 13 Feb 94 12:58:47 Organization: Boston University Information Technology Boston, MA USA Lines: 17 Distribution: bionet Message-ID: NNTP-Posting-Host: acs.bu.edu I'm in terrible need for code (in any computer language) that implements the Hodgkin-Huxley equations for a CNS neuron. For some reason I haven't been able to get my simulation working (Dodge's model, 1961, 1963 -- "node 7"), and now our Tuesday, Feb. 15, deadline for the paper we're trying to submit is coming extremely close. Any variant of a Hodgkin-Huxley neuron would do, as long as the neuron can reach high frequencies -- the Squid axon is not fast enough, but a model of CNS neurons (of any species), esp. myelinated neurons, would probably be perfect. Any help would be greatly appreciated, and I promise to post the paper for anonymous ftp retrieval. Thanks, -Doron (tal@cns.bu.edu) From owner-neuroscience@net.bio.net Sat Feb 12 22:00:00 1994 Path: biosci!parc!decwrl!ames!elroy.jpl.nasa.gov!usc!howland.reston.ans.net!nctuccca.edu.tw!TWNMOE10.Edu.TW!GOVE482 From: GOVE482@TWNMOE10.Edu.TW Newsgroups: bionet.neuroscience Subject: Application Date: Sun, 13 Feb 94 11:29:27 GMT Organization: MOE Computer Center, Taiwan Lines: 7 Message-ID: <16F5CA197.GOVE482@TWNMOE10.Edu.TW> NNTP-Posting-Host: twnmoe10.edu.tw Keywords: Lawrence X-Newsreader: NNR/VM S_1.3.2 To the honored: Hello! I am Lawrence from Taiwan. I am a psychiatrist doctor. I am interested in this discussion group. Could you permit my joining it? Cheers!!! Lawrence Feb 13,1994 E-mail address: Gove482@twnmoe10.edu.tw From owner-neuroscience@net.bio.net Sat Feb 12 22:00:00 1994 Newsgroups: sci.math,bionet.neuroscience,alt.philosophy.objectivism,sci.fractals,sci.nonlinear,alt.consciousness,alt.psychoactives Path: biosci!daresbury!doc.ic.ac.uk!agate!library.ucla.edu!csulb.edu!csus.edu!netcom.com!olea From: olea@netcom.com (Michael Olea) Subject: Re: Mandelbrot set & Platonic mathematics Message-ID: Organization: NETCOM On-line Communication Services (408 241-9760 guest) References: <7572@eagle.ukc.ac.uk> <2jk4fq$2ft@spool.cs.wisc.edu> Date: Sun, 13 Feb 1994 06:01:41 GMT Lines: 43 Xref: biosci sci.math:25548 bionet.neuroscience:2591 alt.philosophy.objectivism:8321 sci.fractals:2807 sci.nonlinear:593 alt.consciousness:2128 tobis@skool.ssec.wisc.edu (Michael Tobis) writes: >In article , ming@kaiwan.com (ming of mongo) writes: >|> There are plenty of goofy pop science books on the subject of >|> fractals and chaos, mostly writen by people who read other goofy pop >|> science books. Chaos theory, or the little I understand of it, seems to >|> be