Okumoto Y, Koyama E, Matsubara H, Nakano T, Nakamura R
Nursing Home for the Aged, Kami no sono, Kyoto, Japan.
Psychiatry Clin Neurosci. 1998 Apr;52(2):194-6. doi: 10.1111/j.1440-1819.1998.tb01026.x.
We administered daily morning bright light exposure in two separate periods to a demented aged subject in a nursing home and analyzed the sleep pattern changes from the sleep diary over 6 months. In the first light exposure period, the ratio of sleep time in night hours increased and maintained a higher value throughout the period than the previous baseline. After stopping the light exposure, the sleep pattern of the subject deteriorated. Resuming the light exposure reproduced similar sleep pattern changes. These results suggest that morning bright light exposure provides a better environment for aged persons to maintain a regular sleep-wake pattern.
我们在两个不同时间段对一家养老院的一名老年痴呆患者进行了每日早晨的强光照射，并通过睡眠日记分析了其6个月内的睡眠模式变化。在第一个光照期，夜间睡眠时间的比例增加，且在整个期间维持在比之前基线更高的值。停止光照后，该患者的睡眠模式恶化。恢复光照后再现了类似的睡眠模式变化。这些结果表明，早晨的强光照射为老年人维持规律的睡眠-觉醒模式提供了更好的环境。
