Noise controlled spiral growth in excitable media.
We consider a two-dimensional pulse-coupled array of noisy threshold elements with a long-range interaction. For tight coupling, we observe the formation of spatio-temporal excitation waves, such as target and spiral waves. For weak coupling, we find noise sustained spiral growth, where the noise level controls the scale of the spiral. (c) 1995 American Institute of Physics.
Jung
Peter
P
Department of Physics and Center of Complex Systems Research, Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801.
Mayer-Kress
Gottfried
G