Title :
Spectral analysis of cardiac cycle length variations: resampling overcomes effects of nonuniform spacing
Author :
Schreibman, Ken L. ; Thomas, Cecil W. ; Levy, Matthew N.
Author_Institution :
Dept. of Biomed. Eng., Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
Spectral analysis to cardiac cycle length variations is discussed, and an inherent problem in nonuniformity of sample spacing is indicated. This nonuniformity can cause significant amounts of energy to be moved from the proper frequency into neighboring sidelobes. Resampling in the time domain prevents the energy redistribution in the frequency domain and preserves the spectral peaks associated with autonomic activity
Keywords :
electrocardiography; spectral analysis; autonomic activity; cardiac cycle length variations; energy redistribution; frequency domain; nonuniform spacing; resampling; sidelobes; spectral analysis; spectral peaks; time domain; Biomedical engineering; Biomedical measurements; Fluctuations; Frequency; Heart beat; Heart rate; Length measurement; Parasympathetic nervous system; Spectral analysis; Time measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95561
