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.
|Number of pages||4|
|Journal||Physical Review Letters|
|Publication status||Published - 1997 Dec 1|
ASJC Scopus subject areas
- Physics and Astronomy(all)