Smallest receptive field larger larger still magno

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+ - - - - - - smallest  receptive  field
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magno parvo Day 15
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      receptive fields    rods & cones spots (no inhibitory   surround) ganglion cells  (Kuffler cells) Mexican hats, DoGs & LGN cells (with inhibitory   surround) cortical cells sine waves orientation         [Gabor functions => motion        sine wave X Gaussian]
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from ganglion cells (DoGs) to cortical cells (sine waves; Gabor functions)
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from ganglion cells to cortical cells add up next-adjacent neighbors’  receptive fields (n & n+2 & n+4 & n+6 & etc.)
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other orientations bars would be orthogonal to  these directions
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and motion at time 1
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and motion at time 2
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many  ways of  collecting  information,  by receptive  field  size,  orientation and  motion
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receptive fields in vision details of lateral inhibition in vision and other modalities Ragnar Granit, Nobel Prize, 1967 H. K. Hartline, Nobel Prize, 1967  Georg von B é k é sy, Nobel Prize, 1961
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model of lateral inhibition assumptions vertical & diagonal pathways vertical = excitatory diagonal = inhibitory excitation = 5  *  inhibition results edge enhancement decreased sensitivity compound eye,  ommatidia
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model of lateral inhibition assumptions vertical & diagonal pathways vertical = excitatory diagonal = inhibitory excitation = 5  *  inhibition propagation of spikes   conserved Σ light
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