Features of Chaotic Transients in Excitable Media Governed by Spiral and Scroll Waves

被引：26
|
作者：
Lilienkamp, Thomas [1 ,2 ]
Christoph, Jan [1 ]
Parlitz, Ulrich [1 ,2 ]
机构：
[1] Max Planck Inst Dynam & Selforg, Fassberg 17, D-37077 Gottingen, Germany
[2] Georg August Univ Gottingen, Inst Nonlinear Dynam, Friedrich Hund Pl 1, D-37077 Gottingen, Germany
来源：
PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 05期
关键词：
LEFT-VENTRICULAR HYPERTROPHY; FIBRILLATION; DYNAMICS; DEFIBRILLATION; EXCITATION; MODEL;
D O I：
10.1103/PhysRevLett.119.054101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In excitable media, chaotic dynamics governed by spiral or scroll waves is often not persistent but transient. Using extensive simulations employing different mathematical models we identify a specific type-II supertransient by an exponential increase of transient lifetimes with the system size in 2D and an investigation of the dynamics (number and lifetime of spiral waves, Kaplan-Yorke dimension). In 3D, simulations exhibit an increase of transient lifetimes and filament lengths only above a critical thickness. Finally, potential implications for understanding cardiac arrhythmias are discussed.
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页数：5
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