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A simple model for 1/f spectra in heart rate variability.

Gleeson, James P. and Stefanovska, Aneta (2007) A simple model for 1/f spectra in heart rate variability. In: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE). PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE), 6602 (084101). SPIE-INT SOC OPTICAL ENGINEERING, Bellingham, Washington, USA. ISBN 978-0-8194-6739-3

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Abstract

Heart rate variability (HRV) measures cycle-to-cycle correlations in the instantaneous oscillation period of the heart. In this paper it is shown that a simple model process, consisting of a sum of uncoupled sinusoidal oscillators with slightly different frequencies, has a HRV spectrum with a 1/f scaling over a range of frequencies. This implies that the appearance of 1/f HRV spectra in experiments should not be considered evidence of oscillator coupling or other more complex dynamics. The origin of the 1/f scaling in the model is examined analytically, and its dependence upon the sampling of low-amplitude fluctuations of the process is highlighted.

Item Type: Contribution in Book/Report/Proceedings
Additional Information: NOISE AND FLUCTUATIONS IN BIOLOGICAL, BIOPHYSICAL, AND BIOMEDICAL SYSTEMS
Subjects: Q Science > QA Mathematics
Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 11267
Deposited By: Dr Aneta Stefanovska
Deposited On: 06 Aug 2008 21:20
Refereed?: No
Published?: Published
Last Modified: 09 Apr 2014 20:33
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/11267

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