A model of wave propagation in an inhomogeneous excitable meduim |
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Affiliation: | 1. Environmental Sciences Initiative, Advanced Science Research Center at the Graduate Center of the City University of New York, New York 10031, USA;2. Department of Civil Engineering, City College of New York, New York 10031, USA;3. CSDMS/INSTAAR, University of Colorado - Boulder, Boulder, CO 80309, USA;1. Department of Economics, College of Economics, Jinan University, Address no. 601, Huangpu Street West, Guangzhou, China;2. Queen Mary University of London, Mile End Road, E1 4NS, London, United Kingdom |
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Abstract: | Wave propagation in an inhomogeneous excitable medium is modeled by a two-dimensional, multi-state cellular automaton with absorbing boundary conditions. The inhomogeneity of the meduim affects the normal pattern of wave propagation and various phenomena like delayed propagation and circular wave formation are observed. The different types of wave propagation observed in our computer simulations are summarized in a phase diagram and the predictions of the stochastic models for two of the wave propagation phenomena are presented. This system has been suggested as a simple model of the atrioventricular (AV) node. |
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