stimulation of "in situ" brain cells

F. Frank LeFever flefever at ix.netcom.com
Sat Jul 18 13:49:20 EST 1998


Mant years ago, the New York Neuropsychology Group had either Cracco or
Macabee (Downstate Med Ctr, Broooklyn) speak on their then vry new
magnetic stimulation work.  Since then there have been MAN, MANY
studies employing this technique; it seems to me with some acceleration
in the rate of use over the past 3-4 years.

How local?  Well, in the early applications, movement of (e.g.) one
thumb was the goal.  Subsequent targets have been more interesting
(looking more at cognitve/perceptual questions), but this gives you an
idea of the focus which is easily obtained.  (Haven't followed it, so
don't knoow how fine the focus can get.)

NOT a good way for "feeding information" into brains; better suited to
interfering with activity in a given area, with inferences about
localization (perhaps even timing) based on interruption of information
processing...

There is also direct electrical cortical stimulation, from Penfield
(over half a century ago) to (e.g.) Ojemann, currently.  Much the same 
comments apply.  This is, however quite invasive.

As an undergrad philosophy major, I of course studied metaphysics.  My
impression is that this is not what gets labeled metaphysics in popular
forums (i.e. neither science nor philosophy).  Probably would not be
interested.

F. LeFever
NYNG


In <6ogqou$cb3$1 at nnrp1.dejanews.com> kyan1 at vaxc.hofstra.edu writes: 
>
>Does anyone know of any research being done on
>electric/magnetic/other forms of stimulation of
>"in situ" (human) brain neurons?  invasive/non-
>invasive?  & how local is the stimulation?
>
>Im interested in the possibility of feeding
>information into human brains.  If you also
>like metaphysics, pls visit my page
>http://members.tripod.com/~kickle
>& read the essay titled "everything".
>
>thanks!!                     yan king yin
>
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