Band-phase-randomized surrogate data reveal high-frequency chaos in heart rate variability
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Li-2010-Band-phase-randomize.pdf
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661.77 KB
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Author(s)
Li, Cheng
Ding, Guang-Hong
Wu, Guo-Qiang
Poon, Chi-Sang
Date Issued
August 2010
Journal
Proceedings of the 32rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2010
Publisher
Institute of Electrical and Electronics Engineers
Citation
Cheng Li et al. “Band-phase-randomized Surrogate Data Reveal High-frequency Chaos in Heart Rate Variability.” IEEE, 2010. 2806–2809. Web.© 2010 IEEE.
Version
Final published version
Abstract
We propose a new band-phase-randomized surrogate data method to evaluate the chaotic dynamics in the high (HF) and low frequency (LF) bands of heart rate variability (HRV) in healthy subjects. The chaotic strength of normal HRV as assessed by a noise titration assay completely vanished when its power spectrum was phase-randomized over the entire frequency band or the HF band alone, but not the LF band alone. This finding confirms recent evidence that chaotic dynamics in normal HRV is ascribable mainly to the HF component, or respiratory sinus arrhythmia.
MIT Department
Harvard University--MIT Division of Health Sciences and Technology
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/IEMBS.2010.5626061
