Increased light exposure consolidates sleep and strengthens circadian rhythms in severe Alzheimer's disease patients.
Increased light exposure consolidates sleep and strengthens circadian rhythms in severe Alzheimer's disease patients.
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DOI：
10.1207/s15402010bsm0101_4
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发表时间：
2003-01-01
影响因子：
3.1
通讯作者：
Levi, Leah
中科院分区：
文献类型：
--
作者：
Ancoli-Israel, Sonia;Gehrman, Philip;Levi, Leah
养老院环境中的睡眠非常分散，部分原因可能是由于光照减少。这项研究检查了光线对可能或可能患有阿尔茨海默病的患者的睡眠和昼夜活动节律的影响。结果表明，早晨和晚上明亮的光线导致晚上更巩固的睡眠，如手腕活动记录仪所测量的。根据5参数扩展余弦模型（振幅、顶相、最低点、曲线斜率以及峰谷的相对宽度）的测量，晚间光线还提高了昼夜活动节律的质量。白天和晚上增加光照可能对痴呆患者的睡眠和昼夜节律产生最有益的影响。疗养院应该考虑增加多功能房间的环境光线，病人经常在那里度过大部分时间。
Sleep in the nursing home environment is extremely fragmented, possibly in part as a result of decreased light exposure. This study examined the effect of light on sleep and circadian activity rhythms in patients with probable or possible Alzheimer's disease. Results showed that both morning and evening bright light resulted in more consolidated sleep at night, as measured with wrist actigraphy. Evening light also increased the quality of the circadian activity rhythm, as measured by a 5-parameter extended cosine model (amplitude, acrophase, nadir, slope of the curve, and relative width of the peak and trough). Increasing light exposure throughout the day and evening is likely to have the most beneficial effect on sleep and on circadian rhythms in patients with dementia. It would behoove nursing homes to consider increasing ambient light in multipurpose rooms where patients often spend much of their days.