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Lateralization in Non-human Primates?

Jason Dean Becker jdbecker at acs.ucalgary.ca
Wed Mar 23 12:15:44 EST 1994

Does anybody know of any research that indicates that non-human
primates are lateralized? 

I have been reviewing the literature on the posterior parietal 
lobe and have found that although many investigators agree that 
damage to the monkey inferior parietal lobule (IPL; area 7 or PG)
results in trimodal inattention/ unilateral neglect [this same 
syndrome is readily produced in monkeys with damage in the
arcuate region of the frontal lobe] none of them
report that it occurs with damage to ONLY one side or the other.

In humans unilateral neglect almost invariably occurs with damage
to the non-dominant IPL resulting in a neglect of the LEFT
side-of-space and body. Damage to the same area on the dominant
hemisphere does not result in neglect of the RIGHT side-of-space
or body. This is easily explained by acknowledging that
Wernicke's Area occupies this position and damage here results in
receptive aphasia.

I look forward to your comments; references will be greatly
Jason Becker

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