Wave propagation in an excitable medium with a negatively sloped restitution curve

A. V. Panfilov, C. W. Zemlin

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Recent experimental studies show that the restitution curve of cardiac tissue can have a negative slope. We study how the negative slope of the restitution curve can influence basic processes in excitable media, such as periodic forcing of an excitable cell, circulation of a pulse in a ring, and spiral wave rotation in two dimensions. We show that negatively sloped restitution curve can result in instabilities if the slope of the restitution curve is steeper than - 1 and report different manifestations of this instability.

Original languageEnglish
Pages (from-to)800-806
Number of pages7
JournalChaos
Volume12
Issue number3
DOIs
StatePublished - Sep 2002

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