Title :
Speed-curvature relation for a discrete model of myocardium
Author :
Feldman, Andrew B. ; Chernyak, Yuri B. ; Cohen, Richard J.
Author_Institution :
Dept. of Phys., Harvard Univ., Cambridge, MA, USA
fDate :
31 Oct-3 Nov 1996
Abstract :
The authors derive the curvature relation (the dependence of the wave speed on wavefront curvature) for a discrete model of an excitable medium allowing inhomogeneities in the limiting case of a medium with no recovery process. The model incorporates an element weighting distribution w that is varied locally to match the required values of the local plane wave speed, critical curvature, and effective diffusion constant. The authors successfully linked their discrete model to myocardium using valves obtained from the Luo-Rudy model
Keywords :
biodiffusion; bioelectric phenomena; cardiology; muscle; physiological models; Luo-Rudy model; cardiac electrophysiology; discrete myocardium model; effective diffusion constant; element weighting distribution; speed-curvature relation; wavefront curvature; Engineering in Medicine and Biology Society; Equations; Geometry; Lattices; Myocardium; Nonhomogeneous media; Physics; Switches;
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.1996.646284