Title :
Boundary-layer analysis of a spiral wave core
Author :
Starobin, Josef M. ; Starmer, C.Frank
Author_Institution :
Dept. of Med., Duke Univ. Med. Center, Durham, NC, USA
fDate :
30 Oct-2 Nov 1997
Abstract :
The size of a circular spiral wave core is predicted on the basis of a boundary layer analysis of a spiral wave tip. Dependencies of a spiral core radius on medium parameters are found analytically and numerically for the FitzHugh-Nagumo and Beeler-Reuter models of excitable media. It is shown that the core radius is determined by all currents which are active during a wavefront formation associated with the diffusion fluxes coupling neighboring elements of excitable media. This analysis provides new information about reentrant cardiac arrhythmias
Keywords :
biodiffusion; bioelectric phenomena; cardiology; physiological models; Beeler-Reuter model; FitzHugh-Nagumo model; boundary layer; boundary layer analysis; cardiac arrhythmias; cardiac electrophysiology; excitable media; medium parameters; spiral core; spiral wave tip; wavefront; Biological system modeling; Cardiac tissue; Cardiology; Computer science; Frequency; Information analysis; Kinematics; Motion analysis; Rectifiers; Spirals;
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-4262-3
DOI :
10.1109/IEMBS.1997.754447
