X_Hope_X
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Can someone please help me with some parts in Sperry's study, I can't seem to get my head around this study. At all
I understand that left brain controls right right side of the body. And Info presented in the left visual field is processed in the right hemisphere. But what I'm struggling with is: why were Ppts hands hidden in the investigations ( visual and tactile) and the reason why ppts were not able to speak at zone times really confuses me.
I find this stuff very interesting, but it's quite tough to understand. so I appreciate any help. Thank you so much.
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Findlay6
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The aim of the study was to show that different parts of the brain specialise in different functions. The left hemisphere, which receives visual information from the right visual field, can convert sight into spoken and written language. Usually information entering the right can cross over to be processed in the left. But the results show this can't happen in split brain.
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Just4
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It's basically just linked to lateralisation and localisation of function so if you get your head wrapped around that you'll get it. Sperry used split brain patients because their corpus callosum (due to severe epilepsy) had been severed so the hemispheres weren't sending information to each other. With the visual tasks, the images were flashed at the extremes of the visual fields to prevent optical spread to both hemispheres. With the not being able to speak thing, that's because the speech production and processing centre is in the left hemisphere (ordinarily) so if they were holding something in their right hand and couldn't see it, they couldn't say what it was.

Hope this helps.
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