Modeling heart rate variability by stochastic feedback

Citation
Lan. Amaral et al., Modeling heart rate variability by stochastic feedback, COMP PHYS C, 122, 1999, pp. 126-128
Citations number
22
Categorie Soggetti
Physics
Journal title
COMPUTER PHYSICS COMMUNICATIONS
ISSN journal
00104655 → ACNP
Volume
122
Year of publication
1999
Pages
126 - 128
Database
ISI
SICI code
0010-4655(199909/10)122:<126:MHRVBS>2.0.ZU;2-L
Abstract
We consider the question of how the cardiac rhythm spontaneously self-regul ates and propose a new mechanism as a possible answer. We model the neuroau tonomic regulation of the heart rate as a stochastic feedback system and fi nd that the model successfully accounts for key characteristics of cardiac variability, including the 1/f power spectrum, the functional form and scal ing of the distribution of variations of the interbeat intervals, and the c orrelations in the Fourier phases which indicate nonlinear dynamics. (C) 19 99 Published by Elsevier Science B.V. All rights reserved.