C. Fohlmeister, W. Gerstner, R. Ritz, and J. L. van Hemmen.
Spontaneous excitations in the visual cortex: stripes, spirals, rings, and collective bursts.
Neural Computation, 7(5): 905-914, 1995.

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.