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 Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=19331