老年人以睡眠时间减少、睡眠效率降低、睡眠障碍多、催眠药物使用多为特点，似乎与脑功能退化有关。
The elderly population characterizes diminution of sleep time, reduction of sleep efficiency, sleep disorder and more hypnotic using, which seems related to cerebral functional deterioration.
老年人以睡眠时间减少、睡眠效率降低、睡眠障碍多、催眠药物使用多为特点，似乎与脑功能退化有关。
The elderly population characterizes diminution of sleep time, reduction of sleep efficiency, sleep disorder and more hypnotic using, which seems related to cerebral functional deterioration.
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