Duffy Jeanne F, Czeisler Charles A
Sleep Med Clin. 2009 Jun;4(2):165-177. doi: 10.1016/j.jsmc.2009.01.004.
The circadian system in animals and humans, being near but not exactly 24-hours in cycle length, must be reset on a daily basis in order to remain in synchrony with external environmental time. This process of entrainment is achieved in most mammals through regular exposure to light and darkness. In this chapter, we review the results of studies conducted in our laboratory and others over the past 25 years in which the effects of light on the human circadian timing system were investigated. These studies have revealed, how the timing, intensity, duration, and wavelength of light affect the human biological clock. Our most recent studies also demonstrate that there is much yet to learn about the effects of light on the human circadian timing system.
动物和人类的昼夜节律系统,其周期长度接近但并不恰好为24小时,必须每天进行重置,以便与外部环境时间保持同步。在大多数哺乳动物中,这种同步过程是通过定期暴露于光照和黑暗中来实现的。在本章中,我们回顾了过去25年在我们实验室及其他地方进行的研究结果,这些研究调查了光对人类昼夜节律系统的影响。这些研究揭示了光的时间、强度、持续时间和波长如何影响人类生物钟。我们最近的研究还表明,关于光对人类昼夜节律系统的影响,仍有许多有待了解的地方。