Do Simple Cells in Primary Visual Cortex Form a Tight Frame?
نویسندگان
چکیده
منابع مشابه
Do Simple Cells in Primary Visual Cortex Form a Tight Frame?
Sets of neuronal tuning curves, which describe the responses of neurons as functions of a stimulus, can serve as a basis for approximating other functions of stimulus parameters. In a function-approximating network, synaptic weights determined by a correlation-based Hebbian rule are closely related to the coefficients that result when a function is expanded in an orthogonal basis. Although neur...
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Hundreds of thalamic axons ramify within a column of cat visual cortex; yet each layer 4 neuron receives input from only a fraction of them. We have examined the specificity of these connections by recording simultaneously from layer 4 simple cells and cells in the lateral geniculate nucleus with spatially overlapping receptive fields (n = 221 cell pairs). Because of the precise retinotopic org...
متن کاملIndependent Component Filters of Natural Images Compared with Simple Cells in Primary Visual Cortex
Properties of the receptive fields of simple cells in macaque cortex were compared with properties of independent component filters generated by independent component analysis (ICA) on a large set of natural images. Histograms of spatial frequency bandwidth, orientation tuning bandwidth, length and aspect ratio of the receptive fields match well. This indicates that simple cells are well tuned ...
متن کاملIndependent component filters of natural images compared with simple cells in primary visual cortex.
Properties of the receptive fields of simple cells in macaque cortex were compared with properties of independent component filters generated by independent component analysis (ICA) on a large set of natural images. Histograms of spatial frequency bandwidth, orientation tuning bandwidth, aspect ratio and length of the receptive fields match well. This indicates that simple cells are well tuned ...
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ژورنال
عنوان ژورنال: Neural Computation
سال: 2000
ISSN: 0899-7667,1530-888X
DOI: 10.1162/089976600300015817