SCROLL BREAKUP IN A 3-DIMENSIONAL EXCITABLE MEDIUM

Authors
PANFILOV AV HOGEWEG P
Citation
Av. Panfilov et P. Hogeweg, SCROLL BREAKUP IN A 3-DIMENSIONAL EXCITABLE MEDIUM, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 53(2), 1996, pp. 1740-1743
Citations number
18
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
53
Issue
2
Year of publication
1996
Pages
1740 - 1743
Database
ISI
SICI code
1063-651X(1996)53:2<1740:SBIA3E>2.0.ZU;2-A
Abstract
We show that a scroll wave in a homogeneous three-dimensional (3D) exc itable medium can spontaneously break up into an irregular spatial pat tern. This occurs in a FitzHugh-Nagumo model with modified dynamics of the slow variable (shortened relative refractory period of the excita ble medium). The mechanism of the scroll breakup in 3D is similar to t he mechanism of the spiral breakup in 2D and is associated with the in stability of wave propagation under high frequency forcing.