Information in the visual fields goes to the contra-lateral hemisphere. It is kind of hard to describe (easier to illustrate). Basically the information in each eye is split into right and left visual fields. So each eye sees roughly half right visual field and half left visual field (and a good deal of overlap that contains the binocular information). This information integration is maintained (or should I say established) as the retinas cells project/connect back through the optic nerve, the optic chiasm, and thalamic nuclei to the cortex. So the right visual field, half from the right eye and half from the left, is "moved" to the left hemisphere and the left visual field is moved to the right hemisphere. Does that make sense (seriously, look on neuroscience for kids or some other web site or get an illustration from a textbook. Verbal description is much more difficult than showing them a picture).
______________________________________________ Timothy O. Shearon, PhD Albertson College of Idaho Caldwell, ID 83605 [EMAIL PROTECTED] Current courses: History and systems, Neuropsychology, Psychopharmacology, Psychology and Cinema, Advanced seminars in neuropsychology, psychopharmacology, film studies -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, March 03, 2005 1:15 PM To: Teaching in the Psychological Sciences 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 --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED] --- You are currently subscribed to tips as: [email protected] To unsubscribe send a blank email to [EMAIL PROTECTED]
