Reason for crossed projections in the nervous system?
e.keulers at student.kun.nl
Sat Nov 18 16:34:18 EST 1995
In article <48ajig$se3 at news.cuny.edu>,
Etha Schlemermeyer <etha at genectr.hunter.cuny.edu> wrote:
>> Cajal thought it was to compensate for optical inversion of the images
>> projected onto the retinas. See "Recollections of my Life" pp. 470-475.
>> John A. Kiernan
>> Department of Anatomy
>> Univ. of Western Ontario
>> LONDON, Canada N6A 5C1
>> e-mail: kiernan at uwo.ca
>But you need to compensate for Up-down, not for right-left. ??
Why would the brain need to compensate for up-down or right-left? There is no
homunculus watching a screen or something! And even if it were it could be
standing on it's head. If everything is cross-linked one could interpret the
whole brain being inverted and upside down so the brain wouldn't have to be
'aware' of this.
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