On 3 Nov 1995, Stephen Lessnick wrote:
> I have recently been asked to find info on the following, but have not
> been particularly successful. Does anyone have information regarding:
>> 1) Why (from a teleological {sp?} point of view) does the right
> hemisphere control (and receive information predominantly from) the left
> side of the body and visa-versa? I'm sure there have been a number of
> theories advanced. If you have references for the theories it would be
> really helpful.
>> 2) When in evolution does this pattern of crossed connections arise?
>> Thanks!
The answer is developmental. The way the brain has to fold
during embryonic development results in the crossed architecture. I
don't know the answer to # 2, sorry.
Sandra
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sandraw at U.Arizona.EDU
