Intermittent dynamics and 1/f^beta noise in single cardiac muscle cells

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Fluctuations in the spontaneous beating activity of isolated cardiac cells were studied over a timescale of six decades. The beat dynamics of single cardiac cells were heterogeneous and intermittent. The interbeat intervals (IBIs) were power-law distributed in a long-time regime. Furthermore, for long timescales up to the experimental window, the autocorrelation of IBIs exhibits a scaling behavior of 1/f^beta-noise type. These observations suggest that 1/f^beta noise is an intrinsic characteristic of spontaneous activity of single cardiac cells.
5 pages, 5 figures

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Cell Behavior

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http://salesiana.dossiersoluciones.com/handle/123456789/136218

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0708.2308
 http://arxiv.org/abs/0708.2308

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arXiv