TIME-FREQUENCY ANALYSIS OF CARDIOVASCULAR SIGNALS

H. Sorsa, V. Turjanmaa

Abstract

Cardiovascular variability signals provide information about the functioning of the autonomous nervous system and other physiological sub-systems. Signals may be measured either as continuous electrocardiogram and blood pressure signals or as so-called beat-to-beat time series of RR-intervals end e.g. systolic and diastolic blood pressure. These signals are typically nonstationary by nature, and joint time-frequency analysis can provide more information than simple time domain methods or spectral analysis. In this paper, some time-frequency methods are compared using signals measured during orthostatic tilt.

Keywords

joint time-frequency analysis, nonstationary signals, cardiovascular system

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IMEKO-WC-2000-TC13-P344.pdf

DOI

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IMEKO TC

TC13 - Measurements in Biology and Medicine

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