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The role of noise in some physical and biological systems

AutorGunton, James D.; Toral, Raúl ; Mirasso, Claudio R. ; Gracheva, M. E.
Fecha de publicación15-ene-2003
EditorTransworld Research Network (Trivandrum, India)
CitaciónRecent Research Developments in Applied Physics 6: 497-530 (2003)
ResumenA short review of our recent research involving the role of noise in a variety of systems is given. Two classes of problems are discussed. The first is the effect of fluctuations on cellular and intercellular calcium oscillations. Oscillations in intracellular calcium ion concetrations are responsible for the regulation of a remarkable number of different cellular processes in the human body. Fluctuation effects taht are ignored in deterministic models of these oscillations are discussed. The second class includes two examples of coherence resonance, in which noise induces some type of order in systems. System size resonance ( coherence resonance taht depends on the number of elements of the system) is demonstrated for a globally coupked FitzHugh_naguno model. Coherence resonance in chaotic systems is illustrated for the Chua circuit.­
Descripción33 pages, 11 figures.-- Pre-print archive.
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