NDLI: Wavelet decomposition of heart period data

Content Provider	IEEE Xplore Digital Library
Author	Ikeda, K. Vaughn, B. Quint, S.
Copyright Year	1999
Description	Author affiliation: Dept. of Biomed. Eng., North Carolina Univ., Chapel Hill, NC, USA (Ikeda, K.)
Abstract	Autonomic control over the cardiac cycle is mediated by the dynamic influences from the vagal and sympathetic nerves. Each division controlled in a non-linear fashion. To investigate the influence of vagal stimulation on the cardiac cycle, the authors used the wavelet transform (WT) to distinguish the frequency content of the heart period variability (HPV) data collected from standard 3 lead ECG. This method enabled them to show time series representation of the frequency content, which is not possible with a standard discrete Fourier transform or a Short Time Fourier Analysis. By characterizing the heart period during vagal nerve stimulation (VNS), it may be possible to identify the dynamic relationship between vagal output and control over variability in the cardiac cycle. To test the effects of the left vagal nerve stimulation modulation of the heart period (HP), the WT was conducted on data collected before and during stimulation of the left vagus nerve. The authors' results show that WT reveal a decrease in low frequency variability. They feel that the WT is a valuable tool to estimate instantaneous frequency changes in HPV during dynamic events.
File Size	104615
File Format	PDF
ISBN	0780356748
ISSN	1094687X
DOI	10.1109/IEMBS.1999.802388
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-10-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heart Continuous wavelet transforms Electrocardiography Frequency estimation Electrodes Biomedical engineering Nervous system Discrete wavelet transforms Discrete Fourier transforms Time series analysis
Content Type	Text
Resource Type	Article

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