Wave pattern selection in an excitable system

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Abstract

Wave pattern selection between periodic spirals and periodic circular pacemaker waves in excitable media is investigated with numerical simulations in a FitzHugh-Nagumo reaction-diffusion model. When spirals have oscillatory tails circular waves are more likely dominant over spirals, whereas it is opposite when spirals have monotonie tails. In both cases a coherent state is achieved in an asymptotic limit with a single period and a velocity. The observed wave pattern selection mechanism seems to underlie the competition between spirals and circular waves observed in signaling activity of Dictyostelium discoideum amoebae population.

Original languageEnglish
Pages (from-to)2907-2910
Number of pages4
JournalPhysical Review Letters
Volume79
Issue number15
Publication statusPublished - 1997 Dec 1

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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