Enhanced Synchronization of Intercellular Calcium Oscillations by Noise Contaminated Signals

被引：2

作者：

ZHANG Jiqian CHEN HanShuang WANG MaoSheng College of Physics and Electronic InformationAnhui Normal UniversityWuhu China ^{[241000
]}

机构：

来源：

CommunicationsinTheoreticalPhysics | 2008年 / 50卷 / 10期

关键词：

synchronization; noise; coupled oscillators; random processes;

D O I：

暂无

中图分类号：

O41 [理论物理学];

学科分类号：

070201 ;

摘要：

<正> We consider the dynamics of locally coupled calcium oscillation systems,each cell is subjected to extracel-lular contaminated signal,which contains common sub-threshold signal and independent Gaussian noise.It is found thatintermediate noise can enhance synchronized oscillations of calcium ions,where the frequency of noise-induced oscilla-tions is matched with the one of sub-threshold external signal.We show that synchronization is enhanced as a result ofthe entrainment of external signal Furthermore,the effect of coupling strength is considered.We find above-mentionedphenomenon exists only when coupling strength is very small.Our findings may exhibit that noise can enhance thedetection of feeble external signal through the mechanism of synchronization of intercellular calcium ions.

引用

页码：903 / 906

页数：4

共 29 条

[11]

M.J.Berridge,M.D.Bootman,P.Lipp. Nature . 1998

[12]

W.Li,J.Llopis,M.Whitney,G.Zlokarnik,R.Y.Tsien. Nature . 1998

[13]

Handbook of Stochastic Methodsfor Physics. GARDINER C W. Chemistry and the Nat-ural Sciences . 1983

[14]

Internal and external fluctuations around nonequilibrium steady states in ono-dimensional heat-Conduction problem. Diaz-Guilera A,Rubi J M. Physical Review . 1986

[15]

Internal and external fluctuations around nonequilibrium steady states in ono-dimensional heat-Conduction problem. Diaz-Guilera A,Rubi J M. Physical Review . 1986

[16]

Noise-induced entrainment and stochastic resonance in human brain wave. Mori T,Kai S. Physical Review Letters . 2002

[17]

"Noise-enhanced phase synchronization of chaotic oscillators,". C. Zhou,,J. Kurths,,I. Z. Kiss,J. L. Hudson. Physical Review . 2002

[18]

Neiman L A,Schimansky-Geler L,Cornell-Bell A,Moss F. Phys.Rev. L ett . 1999

[19]

K. Miyakawa,,T. Okabe,M. Mizoguchi,,and F. Sakamoto. The Journal of Chemical Physics . 1995

[20]

Kuramoto,Y. Chemical Oscillations, Waves, and Turbulence . 1984

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