Controlling Spiral Waves in Confined Geometries by Global Feedback
Controlling Spiral Waves in Confined Geometries by Global Feedback
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DOI：
10.1103/physrevlett.78.3398
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发表时间：
1997-04
影响因子：
8.6
通讯作者：
V. Zykov;A. Mikhailov;S. Müller
中科院分区：
文献类型：
--
作者：
V. Zykov;A. Mikhailov;S. Müller
通过对一个具有全局反馈的反应扩散方程组的数值积分，研究了圆形区域和球面上螺旋波的演化。它示出，根据强度，符号，和/或时间延迟的反馈回路中的全局耦合可以有效地用于稳定刚性旋转的螺旋波或完全破坏螺旋波，并抑制自我维持的活动在一个封闭的域中的可激发介质。螺旋波传播的运动学模型产生的数值观察到的效果的解释。
The evolution of spiral waves on a circular domain and on a spherical surface is studied by numerical integration of a reaction-diffusion system with a global feedback. It is shown that depending on intensity, sign, and/or time delay in the feedback loop a global coupling can be effectively used either to stabilize the rigid rotation of a spiral wave or to completely destroy spiral waves and to suppress self-sustained activity in a confined domain of an excitable medium. An explanation of the numerically observed effects is produced by a kinematical model of spiral wave propagation.