| Literature DB >> 19566278 |
Richard T Baillie1, Aydin A Cecen, Cahit Erkal.
Abstract
We present new evidence that normal heartbeat series are nonchaotic, nonlinear, and multifractal. In addition to considering the largest Lyapunov exponent and the correlation dimension, the results of the parametric and semiparametric estimation of the long memory parameter (long-range dependence) unambiguously reveal that the underlying process is nonstationary, multifractal, and has strong nonlinearity.Mesh:
Year: 2009 PMID: 19566278 DOI: 10.1063/1.3152006
Source DB: PubMed Journal: Chaos ISSN: 1054-1500 Impact factor: 3.642