visual Cortex 2-1

visual Cortex 2-1 -...

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http://www.utexas.edu/neuroscience/Neurobiology/GeorgePollak/movies.html
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Emergent Property is a property built up through a circuit composed of several lower neurons that themselves have specific properties and whose convergence onto a higher order cell creates a new (emergent) property . Hierarchical Processing is the successive construction of new emergent properties that are built up progressively by combining properties created previously.
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Simple cell in visual cortex + + + + - - - - - - - -
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+ + + + + All stellate cells make excitatory connections with simple cortical neuron All geniculate cells make excitatory connections with stellate cells in layer 4C
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Light light on Ef fects of O A B C D E fects The recept excitatory The ce important 1. O w left and da A) ther W ith right (Rec ef fective. 2: Positio within A vert any positio the right it no respons
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recep Complex cell 3 simple cells + + + + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ Cell fires + + + +
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recep Complex cell 3 simple cells + + + + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ Cell fires + + + +
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recep Complex cell 3 simple cells + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + Cell fires + + + + - - - - + + + +
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recep Complex cell 3 simple cells + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + - - - - + + + + - - - - + + + + + Cell fires
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recep Complex cell 3 simple cells + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + - - - - + + + + - - - - + + + + - - - - No response
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+ + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ + + + + + + + + + + _ _ _ _ _ + + + + + + + + + + _ _ _ _ _ + + + + + _ _ _ _ _ Receptive fields of each simple cell overlap and are tiled
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_ _ _ _ _ + + + + + + + _ _ _ _ + + + + + + _ _ _ + + + _ _ _
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+ + + + + + + _ _ _ _ + + + + + + _ _ _ + + + _ _ _ _ _ _ _ _
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_ _ _ _ _ + + + + + + + _ _ _ _ + + + + + + _ _ _ + + + _ _ _
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_ _ _ _ _ + + + + + + + _ _ _ _ + + + + + + _ _ _ + + + _ _ _ + + + + + _ _ _ _ _
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+ + + + + + + _ _ _ _ + + + + + + _ _ _ + + + _ _ _ + + + + + _ _ _ _ _
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end-s A B C (B) _ + + _ _ (A) _ _ (C) Neuron fires strongly
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end-s A B C (B) _ + + _ _ (A) _ _ (C) Neuron fires weakly
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end-s A B C (B) _ + + _ _ (A) _ _ (C) No response
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end-s A B C (B) _ + + _ _ (A) _ _ (C) Neuron fires strongly
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ex c it a to ry re g io n o f ce p ti v e f ie ld co n u r p v e f o r n ta on F o r an en d s pp ed ll su ch a s th e e sh ow n p ag e 22 4 , a cu rv bo rd e r ou b e e ff ec v e s m u lu s in h ib o f la nk h o f H a s r b ra li k e ly sp d so m e ev e d ay s m u s a s is k id n ey ap un if o rm b lo b ? In e v u a l r te x a se le c t t o f s w il l y s t .
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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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The Two Emergent Properties that We Consider Today are: 1) Motion Directional Selectivity 2) Binocularity .
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visual Cortex 2-1 -...

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