Collective dynamics of excitable system in heterogeneous media

被引：0
|
作者：
Di, ZR [1 ]
Wang, DH [1 ]
Cao, ZJ [1 ]
Qu, ZL [1 ]
机构：
[1] Beijing Normal Univ, Ctr Complex Res, Dept Syst Sci, Beijing 100875, Peoples R China
来源：
PROCEEDINGS OF THE 2005 INTERNATIONAL CONFERENCE ON NEURAL NETWORKS AND BRAIN, VOLS 1-3 | 2005年
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
The collective behaviors of excitable system in heterogeneous media are discussed. Due to the heterogeneity on diffusion and other properties of media, the spiral wave will drift over the media and its stability will also be affected. The drift behaviors are different for dense and sparse waves because their different core properties. Moreover we have found that spatial inhomogeneities on diffusion could destabilize the spiral wave. It will cause stable spiral wave meandering or even breakup. Several cases have been investigated including the effects of heterogeneity caused by fiber rotation in cardiac tissue. The meaning of these results for neuro-dynamics in brain and cognitive behavior is discussed.
引用
收藏
页码：1900 / 1905
页数：6
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