Scale-independent measures and pathologic cardiac dynamics

Luís A. Nunes Amaral, Ary L. Goldberger, Plamen Ch Ivanov, H. Eugene Stanley

Research output: Contribution to journalArticlepeer-review

126 Scopus citations


We study several scale-independent measures of cardiac interbeat interval dynamics defined through the application of the wavelet transform. We test their performance in detecting heart disease using a database consisting of records of interbeat intervals for a group of healthy individuals and subjects with congestive heart failure. We find that scale-independent measures effectively distinguish healthy from pathologic behavior and propose a new two-variable scale-independent measure that could be clinically useful. We compare the performance of a recently proposed scale-dependent measure and find that the results depend on the database analyzed and on the analyzing wavelet.

Original languageEnglish (US)
Pages (from-to)2388-2391
Number of pages4
JournalPhysical review letters
Issue number11
StatePublished - Sep 14 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Scale-independent measures and pathologic cardiac dynamics'. Together they form a unique fingerprint.

Cite this