The human ECG - nonlinear deterministic versus stochastic aspects

Details The human ECG - nonlinear deterministic versus stochastic aspects The human ECG - nonlinear deterministic versus stochastic aspects

1998-06-29

arxiv.org/abs/chao-dyn/9807002v1

Nonlinear Sciences

Chaotic Dynamics

6 pages, 9 PS figures

Scientific paper

We discuss aspects of randomness and of determinism in electrocardiographic signals. In particular, we take a critical look at attempts to apply methods of nonlinear time series analysis derived from the theory of deterministic dynamical systems. We will argue that deterministic chaos is not a likely explanation for the short time variablity of the inter-beat interval times, except for certain pathologies. Conversely, densely sampled full ECG recordings possess properties typical of deterministic signals. In the latter case, methods of deterministic nonlinear time series analysis can yield new insights.

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