J
Jack D. Cowan
Researcher at University of Chicago
Publications - 22
Citations - 1870
Jack D. Cowan is an academic researcher from University of Chicago. The author has contributed to research in topics: Population & Visual cortex. The author has an hindex of 19, co-authored 22 publications receiving 1681 citations.
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Journal ArticleDOI
What geometric visual hallucinations tell us about the visual cortex
TL;DR: The results are sensitive to the detailed specification of the lateral connectivity and suggest that the cortical mechanisms that generate geometric visual hallucinations are closely related to those used to process edges, contours, surfaces, and textures.
Journal ArticleDOI
Field-theoretic approach to fluctuation effects in neural networks.
Michael A. Buice,Jack D. Cowan +1 more
TL;DR: The effective spike model is constructed, which describes both neural fluctuations and response and is argued that neural activity governed by this model exhibits a dynamical phase transition which is in the universality class of directed percolation.
Journal ArticleDOI
Avalanches in a stochastic model of spiking neurons.
TL;DR: An important implication is that a network need not be “critical” for the production of avalanches, so experimentally observed power laws in burst size may be a signature of noisy functionally feedforward structure rather than of, for example, self-organized criticality.
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Resonance Effect for Neural Spike Time Reliability
TL;DR: These observations suggest that, when the magnitude of input fluctuations is small, changes in the power spectrum of the current fluctuations or in the spike discharge rate can have a pronounced effect on the ability of the neuron to encode a time-varying input with reliably timed spikes.
Journal ArticleDOI
Systematic fluctuation expansion for neural network activity equations
TL;DR: In this article, a generalized activity model for neural networks is proposed, which includes higher-order statistics like correlations between firing, and it is shown in an example of an all-to-all connected network how their system of generalized activity equations captures phenomena missed by the mean field rate equations alone.