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SJM Guzman jose.guzman at medizin-uni-leipzig.de
Tue May 17 12:33:53 EST 2005

Dirk Bruere at Neopax wrote:

> Anyway, one last question - why is there a crossover?
> Dirk

Hello again Dirk:

I guess with Mr. Collins' book, you will get the answer for every 
question regarding lateralization and more. However, I would like to 
explain you briefly the necessity of the crossover...

The main reason for nerve crossover is to provide the cortex with 
information of both sides of the body.

Moreover, with this property, we have additionally an extraordinary 
faculty; we have almost two copies of the sensory/motor information in 
the cortex, and in case of damage, with the plasticity of the brain, we 
could always reinervate the contralateral (the opposite side) damage 
with the projection of the ipsilateral (the same side) of the cortex.

Thank you very much for your nice complement!


PS:  Mr. Collins, would you be also so nice to send me a digital copy of 
your book. I am sure it would be certainly interesting, given your 
comments in the newsgroups. You can find my e-mail address in 
http://www.neurohost.org, or let me know yours, to contact you.

Thanks in advance.

SJM Guzman

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