Influence of nonexcitable cells on spiral breakup in two-dimensional and three-dimensional excitable media

被引：62
|
作者：
ten Tusscher, KHWJ
Panfilov, AV
机构：
[1] Univ Utrecht, Dept Theoret Biol, NL-3584 CH Utrecht, Netherlands
[2] Univ Dundee, Div Math, Dundee DD1 4HN, Scotland
来源：
PHYSICAL REVIEW E | 2003年 / 68卷 / 06期
关键词：
D O I：
10.1103/PhysRevE.68.062902
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We study spiral wave dynamics in the presence of nonexcitable cells in two-dimensional (2D) and three-dimensional (3D) excitable media, described by the Aliev-Panfilov model. We find that increasing the percentage of randomly distributed nonexcitable cells can prevent the breaking up of a spiral wave into a complex spatiotemporal pattern. We show that this effect is more pronounced in 2D than 3D excitable media. We explain the observed 2D vs 3D differences by a different dependence of the period and diastolic interval of the spiral wave on the percentage of nonexcitable cells in 2D and 3D excitable media.
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页数：4
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