NDLI: Analysis of correlations in heart dynamics in wake and sleep phases

Content Provider	IEEE Xplore Digital Library
Author	Diosdado, A.M. Cruz, H.R. Hernandez, D.B. Coyt, G.G.
Copyright Year	2007
Description	Author affiliation: Inst. Politec. Nac., Mexico City (Diosdado, A.M.; Cruz, H.R.; Hernandez, D.B.; Coyt, G.G.)
Abstract	We study correlations in time series of RR intervals of subjects with normal sinus rhythm (NSR) during sleep and wake phases and we also analyze time series of subjects with congestive heart failure (CHF) in both phases. We use detrended fluctuation analysis (DFA), the Higuchi's method and multifractal analysis. We have obtained different results for sleep and wake phases. The time series of healthy subjects show long-range correlations during sleep and wake conditions; on the other hand, for CHF subjects we have found different correlations during sleep and wake phases. This is confirmed by using both DFA and Higuchi's methods. We have found that the width of the multifractal spectra is practically the same for both phases of healthy subjects and CHF subjects. However, when we study with detail the spectra we observe that the spectra of unhealthy persons are almost symmetrical whereas the spectra of healthy subjects are asymmetrical.
Starting Page	1992
Ending Page	1995
File Size	255539
Page Count	4
File Format	PDF
ISBN	9781424407873
ISSN	1557170X
DOI	10.1109/IEMBS.2007.4352709
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-22
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sleep Fractals Doped fiber amplifiers Time series analysis Heart rate variability Fluctuations Signal processing Heart beat White noise Senior citizens
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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