Figure 2. Comparison of scale-normalized arterial and inverted pulse waveforms in a typical example.

(a) The participant exhibited strong arterial pulsations, characterised by a sharp rise to systole and a dicrotic notch, as well as strong inverted pulsations, characterised by a phase-offset gradual rise and sharp drop. (b) The arterial and inverted waveforms are strongly linked through an inverse relationship (r = 0.96). Best viewed in colour.