X-Message-Number: 19331
Date: Sat, 22 Jun 2002 09:28:11 -0400
From: Thomas Donaldson <>
Subject: CryoNet #19323 - #19328

Hi again!

I'm printing a few more copies of this issue, just because of the
problem of having none. It is PERIASTRON.6.10, May 2002. The reference
to temporary loss of synapses in hibernating squirrels occurs in
CURRENT OPINION IN NEUROBIOLOGY 6(2)(2001) 7ff, by M Segal and P Andersen.

The point here is that Hebb's theory is not at all secure. If you're
interested in the reference I gave in my previous message, the guy
Rakic tries strongly to refute the evidence brought up by others at
this seminar, so you get a mixture of opinions. I think that the
others dealt effectively with him. You get to form your own opinions.

That article also contains at least 2 new theories of memory, one 
which abandons Hebb's ideas completely and another with concentrates
on changes in the dentate gyrus, a part of our hippothalamus which 
virtually all neuroscientists now recognise as an instance not only
of changes in synapses but growth of new neurons, too.

		Best wishes and long long life to all,

			Thomas Donaldson

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