Figure 3: Changes in peripheral perfusion in testing subjects () on receiving four different treatment strategies. AreaBaseline: summation of areas under arterial waveforms within 5 minutes of baseline recording. AreaStim: summation of areas under arterial waveforms for each five-minute recording at each substage after baseline. FIR: far-infrared radiation. at stage 2 versus stage 1 for each treatment strategy; at stage 3 versus Stage 1 for acupuncture, FIR, and combined treatment.