Comparative Analysis on the Effect of Illumination Color in Clinical Environment of Preventive Care

Abstract

Conventional lights used in house were only white and the industrial standard that has recommended the optimal usage of lights have based on the color temperature. Illumination used in daily life these days has extended to provide the capability of using full color lights thanks to recent progress of LED lighting technology, but the standard mentioned above has not considered the effect of color lights on humans yet. Here we investigated the effect of colored lighting conditions on human cognitive performance by conducting an experiment where the subjects from multiple elderly generations executed cognitive tasks under several specific illumination conditions with color to see how the task score and their biological responses would vary among the conditions.