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0899-7667
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1530-888X
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Neural Computation

September 1995, Vol. 7, No. 5, Pages 905-914
(doi: 10.1162/neco.1995.7.5.905)
© 1995 Massachusetts Institute of Technology
Spontaneous Excitations in the Visual Cortex: Stripes, Spirals, Rings, and Collective Bursts
Article PDF (468.85 KB)
Abstract

As a simple model of the cortical sheet, we study a locally connected net of spiking neurons, Refractoriness, noise, axonal delays, and the time course of excitatory and inhibitory postsynaptic potentials are taken into account explicitly. In addition to a low-activity state and depending on the synaptic efficacy, four different scenarios evolve spontaneously, viz., stripes, spirals, rings, and collective bursts. Our results can be related to experimental observations of drug-induced epilepsy and hallucinations.