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
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qa
Subjects:
?? qa mathematicsqc physics ??
ID Code:
11267
Deposited By:
Deposited On:
06 Aug 2008 20:20
Refereed?:
No
Published?:
Published
Last Modified:
16 Jul 2024 01:28