Journal
MATHEMATICAL BIOSCIENCES
Volume 172, Issue 2, Pages 55-72Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0025-5564(01)00069-4
Keywords
bidomain model; ionic current; implicit ODE solvers
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The contraction of the heart is preceded and caused by a cellular electro-chemical reaction, causing an electrical field to be generated. Performing realistic computer simulations of this process involves solving a set of partial differential equations, as well as a large number of ordinary differential equations (ODEs) characterizing the reactive behavior of the cardiac tissue. Experiments have shown that the solution of the ODEs contribute significantly to the total work of a simulation, and there is thus a strong need to utilize efficient solution methods for this part of the problem. This paper presents how an efficient implicit Runge-Kutta method may be adapted to solve a complicated cardiac cell model consisting of 31 ODEs, and how this solver may be coupled to a set of PDE solvers to provide complete simulations of the electrical activity. (C) 2001 Published by Elsevier Science Inc.
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