抄録
The present study was desigend to examine the effects of illuminance and color tempera-ture of room lighting. Four male students volunteered as subjects. Each of them performed a calculation task for 95 minutes under nine different lighting environments consisting of a combination of three levels of illuminance (320lx, 1000lx and 2000lx) and three levels of color temperature (3000°K, 5000°K and 7500°K). Three types of fluorescent lamps were used as a light source to vary the color temperature. Blood pr.essure, critical flicker frequency (CFF) and accommodation time of eye movements were measured every 30 minutes during the task. The accommodation time was significantly influenced by the illuminance level and both the relaxation time and contraction time were prolonged under 2000lx. The diastolic blood pressure was significantly affected by the color temperature level and increased under 7500°K. As for the CFF, the interaction between illuminance and color temperature was significant. These results mean that not only the illuminance but also color temperature produces physio-logical effects. The present study may be the first to recognize the effect of color temperature on the blood pressure
