What does the correlation dimension of the human heart rate measure?

2001/12/12 by M. Sakki, J. Kalda, Sakki, M. +5
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Data Analysis #FOS: Biological sciences #FOS: Physical sciences #Medical Physics (physics.med-ph) #Quantitative Biology (q-bio) #Statistics and Probability (physics.data-an) #physics.data-an #physics.med-ph #q-bio

paper · pdf · doi:10.48550/arxiv.physics/0112031

5 pages, 4 figures

arxiv created 2003/01/08 · arxiv updated 2009/12/01

Abstract

It is shown that in the case of human heart rate, the scaling behaviour of the correlation sum (calculated by the Grassberger-Procaccia algorithm) is a result of the interplay of various factors: finite resolution of the apparatus (finite-size effects), a wide dynamic range of mean heart rate, the amplitude of short-time variability being a decreasing function of the mean heart rate. The value of the scaling exponent depends on all these factors and is a certain measure of short-time variability of the signal.

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