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Chaos for cardiac arrhythmias through a one-dimensional modulation equation for alternans

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Date
2010
Authors
Dai, Shu
Schaeffer, David G
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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 article
Subject
ventricular-fibrillation
strange attractors
spatiotemporal chaos
excitable media
spiral breakup
turbulence
model
dynamics
restitution
potentials
mathematics, applied
physics, mathematical
Permalink
https://hdl.handle.net/10161/3362
Published Version (Please cite this version)
10.1063/1.3456058
Citation
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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