title: Origin of quasiperiodic dynamics in excitable media.
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.
authors.affiliation: Naval Research Laboratory, Special Project in Nonlinear Science, Code 6700.3, PPD, Washington, DC 20375, USA.
authors.forename: I B
authors.initials: IB
authors.lastname: Schwartz
authors.forename: I
authors.initials: I
authors.lastname: Triandaf
authors.forename: J M
authors.initials: JM
authors.lastname: Starobin
authors.forename: Y B
authors.initials: YB
authors.lastname: Chernyak
mesh_terms: D003198:Computer Simulation; D008954:Models, Biological; D008956:Models, Chemical; D017711:Nonlinear Dynamics; D013816:Thermodynamics