Figure 2.

Applications of transmissive type artery pulse monitoring and cardiac cycle analyzing by utilizing our NIR‐OPD. a) Test schematic diagram of transmissive type artery pulse monitoring in real time in this work (the left panel stands test method and the tested results are displayed in real time and the right panel represents test principle). b) The normalized photocurrents artery signals including radial artery, ulnar artery, princeps pollicis artery, palmar arch proper artery, and palmar digital artery. c) The testing results of author's BPM when author keeps calm (blue branch) and is after exercising for 3 min (red branch), respectively. d) The normalized resistance artery signal of palmar digital artery and its enlarged part for analyzing information of cardiac cycle.