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NASA NTRS · 20040141932

Multifractality in human heartbeat dynamics

Ivanov, P. C.·Amaral, L. A.·Goldberger, A. L.·Havlin, S.·Rosenblum, M. G.·Struzik, Z. R.·Stanley, H. E.
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Abstract

There is evidence that physiological signals under healthy conditions may have a fractal temporal structure. Here we investigate the possibility that time series generated by certain physiological control systems may be members of a special class of complex processes, termed multifractal, which require a large number of exponents to characterize their scaling properties. We report on evidence for multifractality in a biological dynamical system, the healthy human heartbeat, and show that the multifractal character and nonlinear properties of the healthy heart rate are encoded in the Fourier phases. We uncover a loss of multifractality for a life-threatening condition, congestive heart failure.

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Non-NASA CenterNASA Discipline CardiopulmonaryFractalsHeart/physiology/physiopathologyMyocardial Contraction/physiologyHumanSupport, Non-U.S. Gov'tHemodynamic ProcessesHeart Failure, Congestive/physiopathologySupport, U.S. Gov't, Non-P.H.SSupport, U.S. Gov't, P.H.SModels, CardiovascularMiddle AgedAdultAgedMaleFemaleDatabases, Factual

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Ivanov, P. C., Amaral, L. A., Goldberger, A. L., Havlin, S., Rosenblum, M. G., Struzik, Z. R., Stanley, H. E.. 1999-06-03. Multifractality in human heartbeat dynamics. https://ntrs.nasa.gov/citations/20040141932

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