Multiple window correlation analysis of HRV power and respiratory frequency

Maria Hansson-Sandsten, Peter Jönsson

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Sammanfattning

In this paper, we evaluate the correlation estimate, based on multiple window spectrum analysis, between the respiratory center frequency and the high-frequency band of the heartrate variability (HRV) power. One aim is to examine whether a more restricted frequency range would better capture respiratory related HR variation, especially when the HR variation is changing rapidly. The respiratory peak is detected and a narrow-banded measure of the high-frequency (HF) band of the HRV is defined as the respiratory frequency +/-0.05 Hz. We compare the mean square error of the correlation estimate between the frequency of the respiratory peak and the power of the HRV with the power in the usual 0.12-0.4 Hz frequency band. Different multiple window spectrum techniques are used for the estimation of the respiratory frequency as well as for the power of the HRV. We compare the peak-matched multiple windows with the Welch method while evaluating the two different HF-power estimates mentioned above. The results show that using a more narrow band for the power estimation gives stronger correlation which indicates that the estimate of the power is more robust.

OriginalspråkEngelska
Sidor (från-till)1770-1779
Antal sidor9
TidskriftIEEE Transactions on Biomedical Engineering
Volym54
Utgåva10
DOI
StatusPublicerad - 2007
Externt publiceradJa

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  • Fysiologi (30106)

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