Heart Timing Signal

GLOSSARY OF TERMS USED IN TIME SERIES ANALYSIS
OF CARDIOVASCULAR DATA

HEART TIMING SIGNAL

HRV signal used to estimate the spectrum of the modulating input m(t) when the IPFM model is assumed

If t_n is the occurrence time of the n-th R-wave, the heart timing signal ht(t_n) is defined as:

ht(t_n)=nT-t_n where T is the mean heart period in the time of analysis. It can be shown that ht(t_n) is equal to the integral of m(t) sampled at times t_n. The relation between the Fourier transforms of ht(t), HT(

), and of m(t), M(

), is: HT(

)=M(

)/(j

)

Mateo J, Laguna P (2000) Improved heart rate variability signal analysis from he beat occurrence times according to the IPFM model. IEEE Trans on Biomed Eng, 47:8, 985-996

(PC 07-09-2000)

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