Chaos for cardiac arrhythmias through a one-dimensional modulation equation for alternans
Abstract
Instabilities in cardiac dynamics have been widely investigated in recent years. One
facet of this work has studied chaotic behavior, especially possible correlations
with fatal arrhythmias. Previously chaotic behavior was observed in various models,
specifically in the breakup of spiral and scroll waves. In this paper we study cardiac
dynamics and find spatiotemporal chaotic behavior through the Echebarria-Karma modulation
equation for alternans in one dimension. Although extreme parameter values are required
to produce chaos in this model, it seems significant mathematically that chaos may
occur by a different mechanism from previous observations. (C) 2010 American Institute
of Physics. [doi:10.1063/1.3456058]
Type
Journal articleSubject
ventricular-fibrillationstrange attractors
spatiotemporal chaos
excitable media
spiral breakup
turbulence
model
dynamics
restitution
potentials
mathematics, applied
physics, mathematical
Permalink
https://hdl.handle.net/10161/3362Published Version (Please cite this version)
10.1063/1.3456058Citation
Dai,Shu;Schaeffer,David G.. 2010. Chaos for cardiac arrhythmias through a one-dimensional
modulation equation for alternans. Chaos 20(2): 23131-23131.
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