Decomposition of heartbeat time series: scaling analysis of the sign sequence

Y. Ashkenazy, Pch Ivanov, S. Havlin, C. K. Peng, Y. Yamamoto, A. L. Goldberger, H. E. Stanley

Research output: Contribution to journalConference articlepeer-review

32 Scopus citations


The cardiac interbeat (RR) increment time series can be decomposed into two sub-sequences: a magnitude series and a sign series. We show that the sign sequence, a simple binary representation of the original RR series, retains fundamental scaling properties of the original series, is robust with respect to outliers, and may provide useful information about neuroautonomic control mechanisms.

Original languageEnglish
Pages (from-to)139-142
Number of pages4
JournalComputers in Cardiology
StatePublished - 2000


FundersFunder number
National Center for Research ResourcesP41RR013622


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