Noise-Enhanced Phase Synchronization in Excitable Media

Alexander Neiman; Lutz Schimansky-Geier; Ann Cornell-Bell; Frank Moss

doi:10.1103/PhysRevLett.83.4896

Noise-Enhanced Phase Synchronization in Excitable Media

Alexander Neiman, Lutz Schimansky-Geier, Ann Cornell-Bell, and Frank Moss

Phys. Rev. Lett. 83, 4896 – Published 6 December 1999

Abstract

We study the response of one- and two-dimensional excitable media to external spatiotemporal noise in terms of synchronization. The media are modeled by a finite-size lattice of locally coupled nonidentical units of the FitzHugh-Nagumo type driven by additive noise. We show that at nonzero noise level the behavior of the system becomes extremely ordered which is manifested by entrainment of the mean frequencies and by stochastic phase locking of distant oscillators in the lattice.

Received 6 July 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.4896

Authors & Affiliations

Alexander Neiman¹, Lutz Schimansky-Geier², Ann Cornell-Bell³, and Frank Moss¹

¹Center for Neurodynamics, University of Missouri at St. Louis, St. Louis, Missouri 63121
²Institute of Physics, Humboldt University at Berlin, Invalidenstrasse 110, D-10115, Berlin, Germany
³Viatech Laboratories/Cognetix, Inc., Ivoryton, Connecticut 06442