Fig. 2From: Ambient-task combined lighting to regulate autonomic and psychomotor arousal levels without compromising subjective comfort to lightingSpectral irradiances of the ambient and task lighting (top), ambient and task combined lightings (middle), and their melanopsin-stimulating fractions (bottom). The melanopsin-stimulating spectral irradiance was calculated from the melanoptic spectral efficiency curve (dotted line in the middle panel) adjusted for the effect of human pre-receptoral filtering [15, 32, 33]Back to article page