Modeling heart rate variability by stochastic feedback.

L A Amaral; A L Goldberger; Ivanov PCh; H E Stanley

doi:10.1016/s0010-4655(99)00295-7

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PubMed · 11542688

Modeling heart rate variability by stochastic feedback.

L A Amaral·A L Goldberger·Ivanov PCh·H E Stanley

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Abstract

We consider the question of how the cardiac rhythm spontaneously self-regulates and propose a new mechanism as a possible answer. We model the neuroautonomic regulation of the heart rate as a stochastic feedback system and find that the model successfully accounts for key characteristics of cardiac variability, including the 1/f power spectrum, the functional form and scaling of the distribution of variations of the interbeat intervals, and the correlations in the Fourier phases which indicate nonlinear dynamics.

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Heart Heart Rate Humans Models, Cardiovascular Nonlinear Dynamics Parasympathetic Nervous System Sinoatrial Node Stochastic Processes Sympathetic Nervous System NASA Discipline Cardiopulmonary Non-NASA Center Journal Article

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L A Amaral, A L Goldberger, Ivanov PCh, H E Stanley. 1999. Modeling heart rate variability by stochastic feedback.. https://doi.org/10.1016/s0010-4655(99)00295-7

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