But it's only the superior colliculi that have been dissed, not our collective colliculi. Our inferior colliculi are just fine with all of this. c
-----Original Message----- From: Marc Carter [mailto:[EMAIL PROTECTED] Sent: Thursday, March 03, 2005 4:56 PM To: Teaching in the Psychological Sciences Subject: RE: split-brain question How about this: The nasal halves of the retinae project ultimately to the contralateral hemisphere; the temporal retinae project ipsilaterally. So (e.g.) information from the left visual hemifield falls on the right halves of the retinae (right eye's temporal, left eye's nasal), and so the left-eye nasal information crosses to the contralateral (right) hemisphere and the right-eye temporal information stays on the right side, et voila, left hemifield info is represented in right hemisphere visual cortex. I tried to get the word "decussation" in there, but couldn't. It's late and my obfuscation machine has gone missing. I will just note here that we're completely ignoring the tecto-fugal visual stream, and have thus completely dissed our colliculi. I, for one, am expecting retribution. m -- Marc Carter Baker University Department of Psychology Assistant Professor, Itinerant Scientist, Inveterate Skeptic, Former Surfer. --- ...asked Wednesday whether it would fair to describe the proposed accounts as having "no effect whatsoever on the solvency" of Social Security, a senior administration official said, "That's a fair inference." ---- LA Times, 3 Feb 2005 -----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] --- 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]
