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Lecture_18 - The Visual System Optics Retina Lateral...

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The Visual System • Optics • Retina • Lateral Geniculate Nucleus • Primary Visual (Striate) Cortex • Extrastriate Cortex • “What” and “Where” Visual Systems
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Optics
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Optics
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Optics
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The Visual System • Optics • Retina • Lateral Geniculate Nucleus • Primary Visual (Striate) Cortex • Extrastriate Cortex • “What” and “Where” Visual Systems
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Rods
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Cones
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Layers in the Retina
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Retinal Ganglion Cells Luminance Detection Cells
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Retinal Ganglion Cells Color-Opponent Cells
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Optic Nerve Connects Retina to LGN (also to Superior Colliculus)
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The Visual System • Optics • Retina • Lateral Geniculate Nucleus • Primary Visual (Striate) Cortex • Extrastriate Cortex • “What” and “Where” Visual Systems
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Left Visual Field Right Visual Field Lateral Geniculate Nucleus LGN
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Lateral Geniculate Nucleus Magnocellular Pathway Parvocellular Pathway Fast Cell Response Slow Cell Response Low Spatial Resolution High Spatial Resolution Color-sensitive Color-insensitive
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