Dynamics of spiral pairs induced by unidirectional propagating pulses

A. Rabinovitch, M. Gutman, Y. Biton, I. Aviram, D. S. Rosenbaum

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Abstract

The dynamics of unidirectionally propagating pulses in a two-dimensional uniform excitable reaction-diffusion medium is investigated. It is shown that under weak diffusion coupling between medium points such a pulse can evolve into a pair of counter-rotating spirals (spiral pair). We analyze the drift of such a pair and examine the collisions between several drifting pairs. It is demonstrated that collisions can result in a special type of reflection or, alternatively, in new types of complex stationary spiral structures. A possible application of these findings for the diagnosis of cardiac arrhythmias is suggested.

Original languageEnglish
Article number061904
JournalPhysical Review E
Volume74
Issue number6
DOIs
StatePublished - 21 Dec 2006

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