The crossover points as already mentioned occurr at those places. As "normally" understood, the split brain issue is usually looked at as an issue relating to communication between hemispheres of what one hemisphere knows which the other doesn't. --Mike
--- On Mon, 11/3/08, Shearon, Tim <[EMAIL PROTECTED]> wrote: From: Shearon, Tim <[EMAIL PROTECTED]> Subject: RE: [tips] question about split brain To: "Teaching in the Psychological Sciences (TIPS)" <[email protected]> Date: Monday, November 3, 2008, 11:53 AM Riki- Carol’s response answers most of what you are asking for (well, pretty much all). But your question is a bit confused or confusing. The decussation points for incoming and outgoing information is brain-stem/spinal cord and thus isn’t affected by the split to the CC. E.g., the visual field crosses over and the motor responses would also be crossed (contralateral) and that does not happen within the brain but before entering and after exiting, if you will. Tim From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, November 03, 2008 12:10 PM To: Teaching in the Psychological Sciences (TIPS) Subject: Re: [tips] question about split brain Thanks for all the answers so far. I phrased my question wrongly. What I really want to know is how the sensory info from e.g. the right side of the body gets to the left hemisphere in a split-brain patient and how the motor info gets from the left hemishere to the right side of the body..I'm aware of the visual pathways. I was questioning the sensory and motor pathways, since all of Gazzaniga's experiments lead to motor responses on the same side of the body as the visual field the info originated in, but that would necessitate involvement of the motor strip in the opposite hemisphere. Where are the crossover points? I realize there is no communication through the corpus callosum, but several people mentioned the other commisures. What info do they transmit? Riki Koenigsberg [EMAIL PROTECTED] Plan your next getaway with AOL Travel. Check out Today's Hot 5 Travel Deals! --- To make changes to your subscription contact: Bill Southerly ([EMAIL PROTECTED]) --- To make changes to your subscription contact: Bill Southerly ([EMAIL PROTECTED]) --- To make changes to your subscription contact: Bill Southerly ([EMAIL PROTECTED])
