R. Ritz, W. Gerstner, and J. L. van Hemmen.
Spontaneous spatiotemporal activity patterns in a simple model of the visual cortex.
In: J.M. Bower (ed.) Computational Neuroscience, pages 249-254 Academic Press, San Diego, 1996.

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. Increasing the synaptic efficacies, four different spatio-temporal excitation patterns evolve spontaneously, viz., moving stripes, rotating spirals, growing rings, and complex pulsating patterns. These results can be related to experimental observations of drug-induced hallucinations.