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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Thong, T. Yung, I.O. Zajdel, D.P. Ellingson, R.M. McNames, J. Aboy, M. Oken, B.S. |
| Copyright Year | 2004 |
| Description | Author affiliation: Dept. of Biomedical Eng., Oregon Health & Sci. Univ., Beaverton, OR, USA (Thong, T.) |
| Abstract | Heart rate variability (HRV) is frequently used to measure autonomic nervous system (ANS) activity. However, little is known about the mechanism underlying pharmacologically induced changes in HRV. Previous research has shown that nicotine exposure stimulates the ANS, mediating a wide spectrum of physiological and behavioral effects, including altered respiratory sinus arrhythmia and enhanced arousal and attention. Using Lomb-Welch periodograms, the effect of nicotine on the ANS in 14 nicotine-naive human subjects are studied. Results showed an increase in the low frequency (LF) to high frequency (HF) ratio with little change in mean heart rate. Results suggest that nicotine affects both sympathetic and parasympathetic reactivities and that the LF/HF best characterizes early ANS activated nicotine changes in HRV. The Lomb-Welch periodogram of the HRV is also compared to the conventional interpolated Welch periodogram. The attenuation of the high frequency components due to interpolation of the non-uniform R-R intervals is found to be a function of the power of the high frequency components, increasing with increasing power. Thus analyses using Welch periodograms that make use of the high frequency components may yield erroneous results. |
| Starting Page | 294 |
| Ending Page | 297 |
| File Size | 1941470 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780384393 |
| DOI | 10.1109/IEMBS.2004.1403150 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-09-01 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Heart rate Heart rate variability Sampling methods Interpolation Biomedical engineering Autonomic nervous system Neurotransmitters Spectral analysis Mesh generation Fourier transforms Welch periodogram Autonomic regulation heart rate variability Lomb transform Lomb-Welch periodogram nicotine |
| Content Type | Text |
| Resource Type | Article |
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