Title :
Conditions for wavefront separation from an unexcitable obstacle in cardiac tissue of low excitability
Author :
Starobin, J.M. ; Zilberter, Y.I. ; Starmer, C.F.
Author_Institution :
Dept. of Med., Duke Univ. Med. Center, Durham, NC, USA
Abstract :
Wavelet formation following collision of a wavefront with an unexcitable obstacle is studied analytically and numerically in a two-dimensional FitzHugh Nagumo excitable medium. Conditions are found when the incident wave colliding with a thin unexcitable filament separates resulting in the initiation of new spiral wavefronts. Numerical experiments reveal good agreement with analytical estimation
Keywords :
bioelectric phenomena; cardiology; physiological models; FitzHugh Nagumo excitable medium; analytical estimation; cardiac electrophysiology; low excitability cardiac tissue; numerical experiments; spiral wavefronts initiation; thin unexcitable filament; two-dimensional medium; unexcitable obstacle; wavefront separation conditions; Biomembranes; Cardiac tissue; Cardiology; Chemicals; Computer science; Electrodes; Frequency; Spirals; Surface waves; Wavelet analysis;
Conference_Titel :
Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2475-7
DOI :
10.1109/IEMBS.1995.574997
