From local to global spatiotemporal chaos in a cardiac tissue model

Z Qu, J N Weiss, A Garfinkel
Physical Review. E, Statistical Physics, Plasmas, Fluids, and related Interdisciplinary Topics 2000, 61 (1): 727-32
Two kinds of chaos can occur in cardiac tissue, chaotic meander of a single intact spiral wave and chaotic spiral wave breakup. We studied these behaviors in a model of two-dimensional cardiac tissue based on the Luo-Rudy I action potential model. In the chaotic meander regime, chaos is spatially localized to the core of the spiral wave. When persistent spiral wave breakup occurs, there is a transition from local to global spatiotemporal chaos.

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