Anthony R. McIntosh
mcintosh at grant.nia.nih.gov
Wed Feb 24 21:45:48 EST 1993
In article <knowled.49.730568181 at ccsmtp.ccf.org> knowled at ccsmtp.ccf.org (Doug Knowles) writes:
>In article <23FEB199319244528 at elroy.uh.edu> psycpc at elroy.uh.edu (Rexer, Jennie L.) writes:
>>I have a question:
>>What is the origin of the decussated (I think I am spelling this correctly...
>>"crossed", in other words) central nervous system?
>>I have never heard a good explanation for this.
>>Also, how far down the evolutionary tree does this occur? All vertebrates?
Actually in his autobiography (Recollections of My Life - pp.
470-475), Ramon y Cajal discusses what he feels are the reasons for
the crossed nervous system. I will refer you to this book and his
original articles on the subject rather than trying to explain it here
and screwing it up. As I recall there were many papers that followed
from this theory so you should be able to find more on it.
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