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Neuro 2-22-10 - Visual System 1 vision is key to...

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2-22-10 Visual System 1. vision is key to understanding brain 2. vision is key to understanding mind A conceptional Note 3. structure and function 4. 2 basic categories Key visual concepts 5. Visual Field 1. external world seen without head movement 2. divided at midline into... 1. right and left 2. superior and inferior 1. 6. Transduction 7. Retinotopic Organization 1. fact that retina is depicted throughout the visual system in topographical map 8. Laminar and Columnar Organization 9. Receptive Fields 1. portion of a visual field that excites or inhibits a neuron 2. understanding derives from micro electrode technology 3. For Rods, Cones: 1. small and round 4. For other visual cells: 1. center-surrounded 2. simple
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3. complex 5. Arise because of... 1. 1. Spatial location of retinal stimulation 2. 2. Afferent synaptic pattern (anatomy) 1. Spatial location of retinal stimulation + Afferent synaptic pattern = receptive field 2. Center-surround receptive fields 10. The Retina 1. cells in the Retina 1. photoreceptors 2. bipolar cells 3.
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