Influence of the loss of time-constants repertoire in pathologic heartbeat dynamics

L. Guzmán-Vargas, A. Muñoz-Diosdado and F. Angulo-Brown

Physica A: Statistical Mechanics and its Applications, 2005, vol. 348, issue C, 304-316

Abstract: We present a fractal analysis of diurnal heart interbeat time series from healthy young subjects and patients with congestive heart failure. We describe some differences between these groups by means of the calculation of some scale-invariant exponents. A previous simple model to reproduce the observed differences is briefly described (Phys. Rev. E 67 (2003) 052901). The model is based in first-order autoregressive processes and consists in the combination of time constants. We suggest that some changes occurring with disease could be related to the participation or absence of time constants. Finally, we also present a multifractal analysis of simulated sequences and their comparison with real data.

Keywords: Time series; Heart rate dynamics; Time constants (search for similar items in EconPapers)
Date: 2005
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:348:y:2005:i:c:p:304-316

DOI: 10.1016/j.physa.2004.09.019

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