Fig. 2From: Enhancement of autonomic and psychomotor arousal by exposures to blue wavelength light: importance of both absolute and relative contents of melanopic componentPhoton flux density (PFD) spectra of colored OLED lights and relative papillary area measured during exposure to these lights in the supplementary study. a PFD spectra of blue, green, and white lights measured at the place of the eyes of subjects lying on a bed right under the ceiling light. b Average relative pupillary area measured during exposure to the lights in seven subjects in the supplementary study. Error bars indicate the range of ± SD of relative diameters. c Estimated PFD spectra of lights reaching the retina calculated from the relative pupillary areas during exposure to the lights. d Melanopic spectral efficiency curve adjusted for human pre-receptoral filtering generated from the data in reference [13]. Vertical dashed lines in both panels indicate the position of λ max of the adjusted melanoptic spectral efficiency (490 nm). e Estimated MSPFD spectra of lights reaching the retina calculated from the relative pupillary areas during exposure to the lightsBack to article page