Pseudoreflection from Interface Between Two Oscillatory Media: Extended Driver

M. Gutman, I. Aviram, A. Rabinovitch

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


The dynamics of a reaction-diffusion medium composed of two uniform self-oscillating regions is considered. We analyze the phenomenon of pseudoreflection of waves at the region’s interface. The reflected waves show an unusual change of wavelength, amplitude, and period. In contrast to our previous results, here this behavior can be perceived as an action of a spatially extended higher-frequency “driver.” Observed also are the interesting phenomena of the appearance of narrow transient zones near the interface and of diffusion-induced bifurcations. Furthermore, the pseudoreflection is shown to be a possible mechanism of spiral and “target” waves generation. The relevance of the obtained results to the dynamics of the cardiac sinus node is discussed.

Original languageEnglish
Number of pages8
JournalPhysical Review E
Issue number1
StatePublished - 1 Jan 2004

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


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