Figure 9
From: Non-contact Quantification of Jugular Venous Pulse Waveforms from Skin Displacements

Jugular venous pulse displacement waveforms over two cardiac cycles for each of 19 healthy subjects. The three important peaks of the JV waveform (a, c, and v) were observed in all the subjects. The second cardiac cycle of Subject 13 was the only waveform that did not have one of the peaks (the a peak is missing).