Spontaneous Excitations in the Visual Cortex: Stripes, Spirals, Rings, and Collective Bursts
- 1 September 1995
- journal article
- Published by MIT Press in Neural Computation
- Vol. 7 (5), 905-914
- https://doi.org/10.1162/neco.1995.7.5.905
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.Keywords
This publication has 10 references indexed in Scilit:
- Coherence and incoherence in a globally coupled ensemble of pulse-emitting unitsPhysical Review Letters, 1993
- Pattern formation outside of equilibriumReviews of Modern Physics, 1993
- A biologically motivated and analytically soluble model of collective oscillations in the cortexBiological Cybernetics, 1993
- Pattern formation in excitable mediaPhysics Reports, 1992
- Associative memory in a network of ‘spiking’ neuronsNetwork: Computation in Neural Systems, 1992
- Singular perturbation theory of traveling waves in excitable media (a review)Physica D: Nonlinear Phenomena, 1988
- A mathematical theory of visual hallucination patternsBiological Cybernetics, 1979
- Spatial mapping in the primate sensory projection: Analytic structure and relevance to perceptionBiological Cybernetics, 1977
- HallucinationsScientific American, 1977
- Cortical Seizure Patterns in Multidimensional View: The Information Content of Equipotential MapsEpilepsia, 1974