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Origin of quasiperiodic dynamics in excitable media
I B Schwartz1, I Triandaf, J M Starobin
1Naval Research Laboratory, Special Project in Nonlinear Science, Code 6700.3, PPD, Washington, DC 20375, USA.
Abstract:
Analysis of the dynamic instabilities of periodic waves in a one-dimensional excitable ring medium demonstrates that driven oscillations of a pulse width display different oscillatory behavior at different values of stimulation frequency. Initial periodicity evolves to quasiperiodic dynamics when the propagation speed of a pulse approaches its minimal value determined by the dispersion relation of a medium.