Frequency Enhancement in Coupled Noisy Excitable Elements

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题名:	Frequency Enhancement in Coupled Noisy Excitable Elements
作者:	Chiang,WY;Lai,PY;Chan,CK
贡献者:	物理學系
关键词:	CARDIAC MYOCYTES;SUPRACHIASMATIC NUCLEUS;COHERENCE RESONANCE;SINOATRIAL NODE;FIBROBLASTS;SYNCHRONIZATION;CONTRACTION;FLUCTUATION;HEARTS
日期:	2011
上传时间:	2012-06-11 10:49:01 (UTC+8)
出版者:	國立中央大學
摘要:	Oscillatory dynamics of coupled excitable FitzHugh-Nagumo elements in the presence of noise is investigated as a function of the coupling strength g. For two such coupled elements, their frequencies are enhanced and will synchronize at a frequency higher than the uncoupled frequencies of each element. As g increases, there is an unexpected peak in the frequency enhancement before reaching synchronization. The results can be understood with an analytic model based on the excitation across a potential barrier whose height is controlled by g. Simulation results of a coupled square lattice can quantitatively reproduce the unexpected peak in the variation of the beating rates observed in cultured cardiac cells experiments.
關聯:	PHYSICAL REVIEW LETTERS
显示于类别:	[物理學系] 期刊論文

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