Beyond 1/f: Multifractality in human heartbeat dynamics

P C Ivanov, Luis AN Amaral, A L Goldberger, S Havlin, M G Rosenblum, Z Struzik, H E Stanley

Research output: Chapter in Book/Report/Conference proceedingChapter


Recent evidence suggests that physiological signals under healthy conditions may have a fractal temporal structure. 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. Further, we 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.
Original languageEnglish
Title of host publicationUPoN’99: Second International Conference
EditorsD Abbott, L B Kish
Place of PublicationMelville, NY
PublisherAmerican Institute of Physics
StatePublished - 2000


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