Fig. 4From: Effect of quantity and intensity of pulsed light on human non-visual physiological responsesExperiment protocol. Participants rested for 11 min under the base lighting condition (15 μW/cm2; 2524 K) prior to exposure to each of the three stimulus lighting conditions. In addition to measuring pupillary constriction, EEG alpha band ratio and subjective evaluations were obtained before and during exposure to the three stimulus lighting conditionsBack to article page