一种体现心肌细胞传导记忆的元胞自动机模型

doi:10.16088/j.issn.1001-6600.2017.04.001

Abstract

Abstract: Cellular automaton is an important method for studying cardiac signal dynamics, but the cells in traditional Greenberg-Hastings cellular automaton have the constant conduction velocity distribution, which cannot reflect the relation between the cardiac signal conduction velocity and the preceding state period. In this paper, a cellular automaton model connected to the conduction restitution of cardiac cells is established. In this model, the conduction velocity of the electrical cardiac signal depends on the preceding state period of the myocardial cells. With this model, the production and maintenance of stable spiral waves in myocardial tissue are simulated, and the phenomena of the Doppler and Eckhaus instability of spiral waves are exhibited, which can not be produced by the traditional Greenberg-Hastings cellular automaton. The causes of the above phenomena are analyzed in this paper. This work provides an useful guidence for further study of the electrical cardiac signal in the future.

Key words: cellular automaton, conduction restitution, spiral wave, Doppler instability, Eckhaus instability

CLC Number:

O411.3

ZHANG Xueliang,TAN Huili, BAI Kezhao, TANG Guoning,DENG Minyi. A Cellular Automaton Model Connected to the ConductionRestitution Property of Cardiac Cells[J].Journal of Guangxi Normal University(Natural Science Edition), 2017, 35(4): 1-9.

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A Cellular Automaton Model Connected to the ConductionRestitution Property of Cardiac Cells

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