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06-30-2004, 12:11 PM #1
Anyone happen to catch the Nova about sight problems last night?
Interesting as hell!!! It was basically one psychologist spewing out his research on sight with regards to the anatomy of the brain. While some of his thoughts are certainly highly contestable, many showed just how complex seeing is - i.e. there's a part of the brain that interprets color, a part for movement, a part of the brain for depth perception, a part that deciphers if something seen is important to bring into conciousness, a part that connects sight to memories, etc...
For example, there was this guy who was hit on the back of the head and lost his vision. Can't conciously see a thing. Nothing. His eyes still function, though. He can sense shapes, movement, can walk without a cain or dog to lead him, and can sense the presense of certain objects. The neurological pathway to his concious sight was severed (which resides near the rear of the brain), but not the pathway to his subconcious sight (which is in the middle of the brain near the hypothalamus).
It also described the "Ah-mig-da-la" (or more correctly, the amygdala). It connects the portion of the brain that deciphers various senses to the area of the brain that interprets data to produce emotions. The doctor interviewed hypothesised that those who have had religious experiences have overactive amygdalas. They showed a case study of a guy who has epileptic seizures in his amygdala and has had numerous religious experiences during or shortly after his episodes. Very interesting... heretical to some....
F'ing riveting! Anyone else see it?Fighting foot fungus one public bath house at a time!