announcement

Giedrius T. Buracas giedrius at salk.edu
Wed Apr 5 06:24:00 EST 2000


Subject: Advanced Study Institute on Modulation of neuronal Signaling

Dear Colleague, 
I would like to draw your attention to the Advanced Study Insitute (see
below), whose goal, besides disseminating information on the latest
developments in neurobiology of neural signaling and visual perception, is
to establish international collaborations.  Please,
circulate this announcemet among colleagues who might be interested in this 
Advanced Study Institute.
The application deadline is April 17th, 2000.
For further information, please, visit our web site:
http://www.cnl.salk.edu/~giedrius/nato_asi

regards-
Giedrius Buracas

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   Giedrius T. Buracas, Ph.D.	giedrius at salk.edu                  ^
   SNL-B
   The Salk Institute,		tel: (858) 453-4100 office ext. 1628
   10010 North Torrey Pines Rd.			       
   La Jolla, CA, 92037, U.S.A.	fax: (858) 546-8526

   http://www.cnl.salk.edu/~giedrius/
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Modulation of Neuronal Signaling: 
Implications for Visual Perception

A NATO Advanced Study Institute
Nida, Lithuania, 
July 12-21 , 2000

Purpose

   The flow of information reaching sensorium of living organisms is
greatly determined by patterns of their interaction with the environment.
During the last decade, the idea that perception is an active process that
depends upon an organism's behavior and knowledge of the environment has
become increasingly popular. The broad acceptance of vision as an active process
is partially attributable to the accumulation of neurophysiological data
revealing many of the diverse cerebral mechanisms underlying the active
nature of visual perception.  These mechanisms are thought to control the
flow of visual information while taking cognitive states and behavioral
context into account.

   The mechanisms controlling information flow in the visual system can
broadly be segregated into three groups:  (I) arousal mechanisms mediated
by modulation of neural responses by ascending activating system; (II)
attention/intention mechanisms that en dow representations of visual
information with behavioral relevance; (III)  cognitive contextual
mechanisms that integrate visual information based on the prior knowledge
about the structure of the environment.  Presumably, the last two
mechanisms are imp lemented via cortico-cortical lateral and feedback
connections as well as through the feedback from subcortical structures.

   The goal of this ASI is to explore the role of these three fundamental
types of modulation of neuronal signaling on visual perception.  The ASI
will examine recent advances in deciphering these modulatory mechanisms
and will draw implications for codin g and computational basis of visual
perception.

    The ASI will provide a medium for the interested researchers and
engineers (mainly postdoctoral and higher level) of relevant areas
(neurophysiology, cognitive neuroscience, mathematics, physics, computer
science) from both NATO and Partner States to learn about the latest
advances in neuronal visual information processing from experts of visual
neuroscience, and initiate mutual collaborative projects.

    Format:  One hour lectures will take place every morning and early afternoon.  
They will be followed by 15 minute discussion periods.  During the second half 
of the day, participants will have an opportunity to present their work either 
in a 15 minute
 oral presentation or the poster format.  Short series of participant
presentations will be followed by a panel discussion. 

Main lectures

T.D. Albright, The Salk Institute, La Jolla, U.S.A.
--Cortical processing of visual motion  
--Contextual influences on visual processing
J. Bullier, INSERM, Bron/Lyon, France
--Influence of cortical feedback on figure/ground discrimination by visual cortical neurons  
--Functional streams in occipito-frontal connections in the monkey
G.M. Boynton, The Salk Institute, La Jolla, U.S.A.
--Principles of fMR imaging of brain function  
--Computational brain imaging 
G.T. Buracas, The Salk Institute, La Jolla, U.S.A.
--Cortical mechanisms of visual target selection  
--Selective visual processing revealed by fMRI 
G. Einevoll, Agricultural University, Norway
--Mathematical modelling of receptive fields in the low-level visual systems of the cat
P. Heggelund, Oslo University, Norway
--Signal processing in the dorsal lateral geniculate nucleus"  
--Analysis of spatial and temporal properties by single cells in the dorsal lateral geniculate nucleus"
J. Kulikowski, UMIST, Manchester, U.K.
--Finding parameter of fundamental filters in vision.  
--Spatial, temporal and chromatic filters operating at detection thresholds.  
--Neural basis of fundamental filters in vision.
N. Leibovic, Buffalo University, NY, U.S.A.
--Environmental requirements and the modulation of visual signals in light and dark adaptation 
--Information processing in the visual system
V. Meskenaite, Inst. fur Neuroinformatik, Switzerland
--Pathways in visual system  
--GABA receptor heterogeneity and functional implications within neocortical microcircuitry
A. Parker, Oxford University, U.K.
-- Cortical Mechanisms of Binocular Depth Perception
K. Pavelzik, University of Bremen, Germany
--Dynamic Synapses and Signal Transmission  
--Rapid Population Rate Codes  
--Unbiased Gain Control and Neuronal Synchronization
O. Ruksenas, Vilnius University, Lithuania 
--Subcortical visual pathways  
--Neuronal signalling at LGN level
C. Wehrhahn, Max Plank Institute, Tübingen, Germany
--Contextual modulation of responses in primary visual cortex 
--Contextual modulation of psychophysical thresholds
T. Villis, University of Western Ontario, Canada
--Eye movements in visual processing 
--The perceptual consequences of Listing's Law
A. Zador, Cold Spring Harbor Lab, Long Island, U.S.A.
--Signal and Noise in Cortical Circuits  
--Is the Homunculus just Watching TV?

Venue:
The summer school will take place in an exotic sea resort Nida, Lithuania, 
on July 12-21 , 2000


Further information at:
www.cnl.salk.edu/~giedrius/nato_asi

Address your questions to:
giedrius at salk.edu
or
osvaldas.ruksenas at gf.vu.lt





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