Literature DB >> 21230501

Anomalous drift of spiral waves in heterogeneous excitable media.

S Sridhar1, Sitabhra Sinha, Alexander V Panfilov.   

Abstract

We study the drift of spiral waves in a simple model of heterogeneous excitable medium, having gradients in the distribution of ion-channel expression or cellular coupling. We report the anomalous drift of spiral waves toward regions having shorter period or stronger coupling, in reaction-diffusion models of excitable media. Such anomalous drift can promote the onset of complex spatiotemporal patterns, e.g., those responsible for life-threatening arrhythmias in the heart.

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Year:  2010        PMID： 21230501     DOI： 10.1103/PhysRevE.82.051908

Source DB:  PubMed          Journal:  Phys Rev E Stat Nonlin Soft Matter Phys        ISSN： 1539-3755


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