Comparative analysis of infrasonic cardiac signals

We have studied and compared three different signals of the same category of infrasonic cardiac signals together; namely, SCG, ULF-BCG and EMFIT recordings. The results demonstrate interesting similarities and differences between these signals and help us to understand some of the mechanisms behind the genesis of these waves. For instance, it was demonstrated that the rapid systolic ejection wave on SCG corresponds to similar waves on the other two signals which further confirms its origin to be the rush of blood in the aorta.