Fig. 6From: Novel capsaicin-induced parameters of microcirculation in migraine patients revealed by imaging photoplethysmographyChange of AC (panel a) and DC (panel b) components of the PPG waveform in control (blue) and migraine (red) groups after capsaicin application. The data are presented as the mean (small squares), error of mean (boxes), and SD (whiskers)Back to article page