传导异质性对心脏可激介质瞬时时空混沌的影响

IF 2.2 3区物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS

Physical Review E Pub Date : 2024-10-01 DOI:10.1103/PhysRevE.110.044207

Melvin Dix, Thomas Lilienkamp, Stefan Luther, Ulrich Parlitz

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引用次数: 0

摘要

危及生命的心律失常（如心室颤动）通常基于混乱的螺旋波或涡旋波动力学，而这种动力学可以自我终止。在这项工作中，我们研究了传导异质性对可兴奋心脏介质通用模型中此类混沌瞬态持续时间的影响。我们观察到，低密度和中等密度的异质性会延长平均瞬态寿命，而高密度时则会出现很长的瞬态、潜在的持续混沌和周期性吸引子。

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Influence of conduction heterogeneities on transient spatiotemporal chaos in cardiac excitable media.

Life-threatening cardiac arrhythmias such as ventricular fibrillation are often based on chaotic spiral or scroll wave dynamics which can be self-terminating. In this work, we investigate the influence of conduction heterogeneities on the duration of such chaotic transients in generic models of excitable cardiac media. We observe that low and medium densities of heterogeneities extend the average transient lifetime, while at high densities very long transients, potentially persistent chaos, and periodic attractors occur.

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来源期刊

Physical Review E PHYSICS, FLUIDS & PLASMASPHYSICS, MATHEMAT-PHYSICS, MATHEMATICAL

CiteScore

4.50

自引率

16.70%

发文量

2110

期刊介绍： Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.