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Analysis of heart rate variability using time-varying frequency bands based on respiratory frequency
Raquel Bailon1, Pablo Laguna, Luca Mainardi
1Aragón Institute for Engineering Research, University of Zaragoza , María de Luna, 1, 50015 Zaragoza, Spain. rbailon@unizar.es
Abstract:
In this paper a methodological approach for the analysis of nonstationary heart rate variability (HRV) signals using time-varying frequency bands based on respiratory frequency is presented. Spectral analysis of HRV is accomplished by means of the Smoothed Pseudo Wigner Ville distribution. Different approaches to the definition of the low frequency (LF) and high frequency (HF) bands are considered which involve respiratory information, derived either from a respiratory signal or from the ECG itself. Results are presented which derive from recordings acquired during stress testing and induced emotion experiments.
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