Coexistence of multiple spiral waves with independent frequencies in a heterogeneous excitable medium.
Coexistence of multiple spiral waves with independent frequencies in a heterogeneous excitable medium.
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DOI：
10.1103/physreve.63.031905
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发表时间：
2001-02
期刊：
影响因子：
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通讯作者：
F. Xie;Z. Qu;J. Weiss;A. Garfinkel
中科院分区：
文献类型：
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作者：
F. Xie;Z. Qu;J. Weiss;A. Garfinkel
基于FitzHugh-Nagumo单元模型的空间系统数值模拟研究了非均质可激介质中具有独立频率的稳定螺旋波的相互作用和共存。当介质的非均质性超过临界值时，从单一的优势螺旋波转变为多个频率独立的螺旋波和n:n-1波传导块共存。在这种情况下，多个螺旋波可以共存，因为它们被混沌区域相互“隔离”。
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.