Q; WHY left hemisphere language?

Bruce Quinn quinn at is2.nyu.edu
Thu Feb 16 21:31:28 EST 1995


: >>>Does anyone have an answer as to WHY language ability initially develops in 
: >>>the left hemispere, without exception?    The only answer I have been able to 

One theory was that it goes with the dominant hand, which is right,
hence the left hemiphere gets language.  Another, that left and right
hands were differentiated for tree climbing.

A physical explanation would be assymetry of blood flow in the left
and right carotid arteries, since the heart and aorta are assymetric.
This sets up one hemisphere to be slightly different than the other.





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