Bio365-39-050310 - Receptive fields in V1 Complex cells...

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Receptive fields in V1
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Complex cells
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Neuron fires strongly Neuron fires weakly No response Hyper-complex cells
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Direction selective cells
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Summary- Cell types in V1 Orientation selective Elongated receptor field Respond to one particular orientation of the bar Position selective (simple) On (in center) and off regions (to the left or right) Position invariant (Complex) No on and off regions Length selective Direction selective Other: color selective, depth selective
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From lateral geniculate 1 2 3 4C 4B 4A 5 6 Complex and End-Stopped Simple and Complex Simple and Complex Center-surround Complex Complex
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Topographic organization of V1
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Retinotopy – map of visual space
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I II III IVA IVB IVC V VI Radial recording penetration Visual field Columnar organization of V1 - retinotopy Fixation point
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I II III IVA IVB IVC V VI Tangential recording penetration Tangential organization of V1 - retinotopy Visual field Fixation point
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This note was uploaded on 06/10/2011 for the course BIO 365R taught by Professor Draper during the Spring '08 term at University of Texas at Austin.

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Bio365-39-050310 - Receptive fields in V1 Complex cells...

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