Validity concerns of common heart-rate variability indices.

Time- and frequency-domain analyses of HRV have provided researchers with important measures of cardiac vagal activity. Stationarity is of theoretical importance for such analyses in the frequency domain but may not be of practical significance in any particular data set. It has been argued that if...

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Bibliographic Details
Published in:	IEEE Engineering in medicine and biology magazine 21, 4 (2002).
Main Author:	Friedman, B.H
Format:	Article
Language:	English
Subjects:	ECG signal. Cardiac vagal activity. Correction procedures. Frequency-domain analyses. Heart-rate variability indices. Mean successive differences. Nonstationary data segments. Quantification issues. Respiratory sinus arrhythmia. Spectral analysis. Stationarity. Statistical differences. Successive-difference filters. Time series. Time-domain measures.