Title :
Speed-curvature relation for a discrete model of excitable media
Author :
Chernyak, Yuri B. ; Feldman, Andrew B. ; Cohen, Richard J.
Author_Institution :
Dept. of Phys., Harvard Univ., Cambridge, MA, USA
fDate :
31 Oct-3 Nov 1996
Abstract :
The authors derive expressions for the dependence of propagation speed on wavefront curvature directly from the excitation rules for a discrete model of an excitable medium in the limiting case of no recovery. This allows the authors to find the plane wave speed, critical curvature, and effective diffusion constant of the medium. Reproduction of these features is essential for modeling reentrant arrhythmias in the heart
Keywords :
biodiffusion; bioelectric phenomena; cardiology; physiological models; discrete model; effective diffusion constant; excitable media; excitation rules; heart; limiting case; no recovery; plane wave speed; propagation speed; reentrant arrhythmias; speed-curvature relation; Boundary conditions; Displays; Eigenvalues and eigenfunctions; Equations; Geometry; Heart; Page description languages; Physics; Spirals; Steady-state;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.646321
