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脑内的小人
Cortical maps 1.Topography 2.Distorted mapping 3.Experience dependent changes 4.Lasting Plasticity
Cortical maps 1. Topography 2. Distorted mapping 3. Experience dependent changes 4. Lasting Plasticity
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Right visual field The Visual System Left visual field Retina-LGN-Visual cortex .Natural stimulation:light Temporal Nasal .Long optic nerve Temporal Optic chiasm .Peripheral and central parts Hartline HK.1937 Pulvinar nucleus unit recording from the optic nerver Lateral geniculate Granit R.1947 nucleus Superor colliculus unit recording from single axons Barlow H Kuffler S,1950s Optic radiation- unit recording from retinal ganglion cells Primary visual cortex Hubel D Wiesel T,1960s,1970s recording from LGN and the visual cortex Vision Among all of sensations in human,vision provides 70%Information about environment. Electromagnetic waves: Visible 400~800 nm UV light,infra-red light
The Visual System Retina - LGN - Visual cortex •Natural stimulation: light •Long optic nerve •Peripheral and central parts Hartline HK, 1937 unit recording from the optic nerver Granit R, 1947 unit recording from single axons Barlow H & Kuffler S, 1950s unit recording from retinal ganglion cells Hubel D & Wiesel T, 1960s, 1970s recording from LGN and the visual cortex Vision Among all of sensations in human, vision provides 70% Information about environment. Electromagnetic waves: Visible 400 ~ 800 nm UV light, infra-red light
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