Self-organized pacemakers and bistability of pulses in an excitable medium

Michael Stich*, Alexander S. Mikhailov, Yoshiki Kuramoto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Pattern formation in an excitable medium described by a three-component reaction-diffusion system is investigated. Our focus is on stable self-organized pacemakers which give rise to spatially extended target patterns. Bistability of pulse solutions in the excitable regime is also reported, and interactions of the different pulses with each other and the pacemaker are studied. Self-organized pacemakers are created by a suitable perturbation from the steady state or through interaction of pulses. Bound states of one-dimensional pacemakers and phase flips are also observed.

Original languageEnglish
Article number026110
JournalPhysical Review E
Issue number2
Publication statusPublished - 2 Feb 2009


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