Kubota T, Uchiyama M, Hirokawa G, Ozaki S, Hayasi M, Okawa M
Department of Rehabilitation, Tokyo Metropolitan Neurological Hospital, Japan.
Psychiatry Clin Neurosci. 1998 Apr;52(2):248-9. doi: 10.1111/j.1440-1819.1998.tb01057.x.
Six healthy male subjects aged 21-35 years participated in the present study. The subjects were exposed to dim light (150 lux) or bright light (3000 lux) at eye level, from 19.00 to 21.30 h for 5 days. Rectal temperature and wrist activity were monitored throughout the study period. Rectal temperature nadir was delayed significantly after the bright light exposure. Ease in sleep initiation and overall sleep quality, measured by questionnaire, were aggravated significantly by the evening bright light exposure. These results suggest that strong illumination at night may disturb nocturnal sleep.
6名年龄在21至35岁之间的健康男性受试者参与了本研究。受试者于19:00至21:30期间，在眼睛水平高度接受昏暗光线（150勒克斯）或明亮光线（3000勒克斯）照射，持续5天。在整个研究期间监测直肠温度和手腕活动情况。明亮光线照射后，直肠温度最低点显著延迟出现。通过问卷调查测得的入睡难易程度和整体睡眠质量，在夜间接受明亮光线照射后均显著变差。这些结果表明，夜间的强光可能会干扰夜间睡眠。
