Spiral breakup in excitable tissue due to lateral instability

Maree, A.F.M. ORCID: https://orcid.org/0000-0003-2689-2484 and Panfilov, A.V. 1997. Spiral breakup in excitable tissue due to lateral instability. Physical review letters 78 (9) , pp. 1819-1822. 10.1103/PhysRevLett.78.1819

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Abstract

In a simple two-component model of excitable tissue a spiral wave is found to break up into a large number of small spirals. More specifically, we used a modified FitzHugh-Nagumo model. Spiral breakup is found to occur when the recovery variable diffuses at a high rate. The breakup is caused by lateral instability of the wave front. We analyzed this instability using quasi-one-dimensional computations and found that it could be connected to a negative eikonal-curvature relation for the parameter values at which spiral breakup occurs.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences
ISSN:	1079-7114
Last Modified:	25 Oct 2022 13:19
URI:	https://orca.cardiff.ac.uk/id/eprint/119508

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