New approach used to extract fluctuations in vagal activity - Wigner Distribution of Heart Rate Variability

Document Type

Conference Proceeding

Publication Date

12-1-1999

Abstract

The Wigner Distribution of Heart Rate Variability (HRV), is introduced to extract the fluctuations of rats' vagal activity. Traditional spectral analysis, using FFT or auto-regressive models, of beat-to-beat heart rate variability, is not well suited for tracking transient changes of autonomic function over time. In this study, the Wigner distribution of the HRV was used to derive instantaneous vagal activity by extracting the high frequency component (0.8 Hz to 2.3 Hz) in the HRV signal for each instant of time (512 msec). To test the effectiveness of the algorithm, the derived vagal signal was compared with the real vagal signal recorded from the right cut cervical vagus. The results showed significant agreement.

Identifier

0033353933 (Scopus)

ISBN

[0780356756]

Publication Title

Annual International Conference of the IEEE Engineering in Medicine and Biology Proceedings

ISSN

05891019

First Page

260

Volume

1

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