Phys. Rev. E 63, 031905 (2001) [4 pages]Coexistence of multiple spiral waves with independent frequencies in a heterogeneous excitable mediumReceived 22 September 2000; published 23 February 2001 We studied the interactions and coexistence of stable spiral waves with independent frequencies in a heterogeneous excitable medium, using numerical simulations of a spatial system based on the FitzHugh-Nagumo cell model. When the heterogeneity of the medium exceeded a critical value, a transition took place from a single dominant spiral wave to a coexistence of multiple spiral waves with independent frequencies and n:n-1 wave conduction blocks. In this case, multiple spiral waves could coexist because they are “insulated” from each other by chaotic regions. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.63.031905
DOI:
10.1103/PhysRevE.63.031905
PACS:
87.19.Nn, 87.19.Hh, 05.45.Jn
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