Mike,

Thank you.  I went back and relooked at the picture and figured it out. 
The picture was quite confusing at first glance and I've taught this class
so many times.  I guess I just got so used to teaching it a certain way
and was thrown off by the student's question.

Nina

> Hi,
>
> No, visual info from the left visual field goes (ultimately)only to the
> primary visual cortex in the right hemisphere
> and vice versa.  Info does "crossover" at the optic
> chiasm but here it's actually combining the info received
> from the left and right halves of each eyeball.  Each hemisphere in the
> split-brain is functionally cut off from
> communicating its information to the other.
>
> Mike Lee
> Dept of Psychology
> University of Manitoba
> Winnipeg, MB, Canada
>
> ----- Original Message -----
> From: <[EMAIL PROTECTED]>
> To: "Teaching in the Psychological Sciences" <[email protected]>
> Sent: Thursday, March 03, 2005 2:14 PM
> Subject: split-brain question
>
>
>> Hi all,
>>
>> I had a student ask me a question in class the other night regarding
>> split-brain patients.  Does visual information go to both hemispheres?
>> From pictures, it looks as though information coming into your right
>> visual field splits and goes to both the right and left hemisphere and
>> vice versa for the information coming into your left visual field.  I
>> understand that the information still crosses by way of the optic nerve,
>> but it seems as though from pictures that the visual information goes to
>> both hemispheres, although that is not the way it is explained.
>>
>> Thank you,
>> Nina
>>
>>
>> Dr. Nina L. Tarner
>> 325 Math/Psychology Building
>> Department of Psychology
>> UMBC
>> Baltimore, MD.  21250
>> 410-455-3704
>>
>>
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Dr. Nina L. Tarner
325 Math/Psychology Building
Department of Psychology
UMBC
Baltimore, MD.  21250
410-455-3704


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