INSTABILITIES OF A PROPAGATING PULSE IN A RING OF EXCITABLE MEDIA

被引：179

作者：

COURTEMANCHE, M

GLASS, L

KEENER, JP

机构：

[1] UNIV ARIZONA,TUCSON,AZ 85717

[2] UNIV UTAH,DEPT MATH,SALT LAKE CITY,UT 84112

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.70.2182

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Instabilities in the circulation of a pulse in a ring of excitable cardiac tissue are analyzed using two different formulations: (1) a reaction-diffusion partial differential equation (PDE) model for cardiac electrical activity using the Beeler-Reuter equations to represent ionic currents in the cardiac cells; (2) a neutral delay-differential equation that we propose as a model for the PDE. Stability analysis and numerical simulation of the delay equation agree with results from simulations of the PDE model.

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页码：2182 / 2185

页数：4

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