生体リズムと光(<特集>健康のための光)

概要

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Various studies show that light and the rhythms of a living body are closely related, and it has been demonstrated that: 1) morning light promotes the sleep-wake rhythm and works to reset the 25-hour circadian rhythm, the rhythm by which human beings are physiologically controlled, to 24 hours; 2) evening light works to set back the sleep-wake rhythm, and if a person is exposed to strong illumination at night, he/she will face a higher risk of suffering from delayed sleep-phase syndrome; and 3) if one is exposed to a strong light during the daytime, the amplitudes of the sleep-wake rhythm and the temperature rhythm will increase, thus leading to a refreshing daily life. It is important to take advantage of natural light and illumination effectively in order to get better sleep and to lead a healthy life.
社団法人照明学会の論文
2009-03-01