A trial to explain the wave number and origin in the so-called "principal segment" of the sphygmogram by means of comparative ballistocardiographic and phonocardiographic investigations.
D001450:Ballistocardiography; D006339:Heart Rate; D006801:Humans; D010701:Phonocardiography; D011674:Pulse
BALLISTOCARDIOGRAPHY; PHONOCARDIOGRAPHY; PULSE