Next: Introduction
Spontaneous excitations in the visual cortex:
stripes, spirals, rings, and collective bursts
Corinna Fohlmeister, Wulfram Gerstner,
Raphael Ritz, and
J.Leo van Hemmen
Physik-Department der TU München,
D-85747 Garching bei München,
Germany
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.
Raphael Ritz
Fri Sep 22 16:19:19 PDT 1995