Campbell S S, Kripke D F, Gillin J C, Hrubovcak J C
Department of Psychiatry, University of California, San Diego.
Physiol Behav. 1988;42(2):141-4. doi: 10.1016/0031-9384(88)90289-2.
Exposure to light was recorded from 10 healthy elderly adults and 13 age-matched subjects with senile dementia of the Alzheimer's type (SDAT). Data were recorded in the home, for an average of 5 days, while subjects continued their normal daily activities. Subjects were exposed to remarkably small intervals of illumination exceeding 2000 lux. Subjects with SDAT were exposed to bright light significantly less than healthy controls (0.5 vs. 1.0 hr). Whether or not they had SDAT, males were exposed to illumination exceeding 2000 lux significantly more than were females. Healthy elderly received about two-thirds the duration of bright light received by healthy younger subjects. These findings suggest an association between decreased exposure to bright light and the declines in sleep quality which typically accompany normal and pathological aging.
记录了10名健康老年人和13名年龄匹配的阿尔茨海默病型老年痴呆症（SDAT）患者的光照情况。数据是在受试者家中记录的，平均记录5天，期间受试者继续其正常的日常活动。受试者暴露于超过2000勒克斯的光照时间非常短。SDAT患者暴露于强光下的时间明显少于健康对照组（0.5小时对1.0小时）。无论是否患有SDAT，男性暴露于超过2000勒克斯光照下的时间明显多于女性。健康老年人接受强光照射的时长约为健康年轻受试者的三分之二。这些发现表明，强光暴露减少与正常衰老和病理性衰老过程中通常伴随的睡眠质量下降之间存在关联。
