Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10351774 | Computers in Biology and Medicine | 2005 | 19 Pages |
Abstract
The statistical properties of the time- and frequency-domain characteristics of heart rate variability are known to vary over time. A method is presented to compute the time-varying spectral contents of the characteristic narrow-band frequency components of heart rate variability by means of the instantaneous amplitude and frequency at an optimal time resolution. The instantaneous frequency may show oscillatory, but also irregular periods in time. An index of the instantaneous bandwidth is computed to discriminate between oscillatory and irregular periods and to correct the instantaneous amplitude and frequency for irregular periods.
Keywords
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
H.G. van Steenis, W.L.J. Martens, J.H.M. Tulen,