Bixler E O, Kales A, Jacoby J A, Soldatos C R, Vela-Bueno A
Int J Neurosci. 1984 Mar;23(1):33-42. doi: 10.3109/00207458408985343.
Sleep patterns were evaluated in 100 normal men and women who did not have any complaints of a sleep disorder and who were divided into three broad age groups: 19-29, 30-49, and 50-80 years. Total laboratory recording time was held constant across all four study nights. The amount of nightly wakefulness was positively correlated with age; total wake time for the oldest age group was about two times that of the youngest group, due primarily to an increase in wake time after sleep onset, because sleep latency did not change with age. Within each of the three age groups, especially the two oldest groups, the greatest amount of wakefulness following sleep onset occurred in the final hours of the recording period. Sleep in men was characterized by a higher number of nocturnal awakenings, and in elderly men by a longer final awakening; however, other parameters of sleep efficiency did not differ considerably between the sexes.
对100名无睡眠障碍主诉的正常男性和女性的睡眠模式进行了评估，这些人被分为三个大致年龄组：19 - 29岁、30 - 49岁和50 - 80岁。在所有四个研究夜晚，实验室的总记录时间保持不变。夜间清醒时间与年龄呈正相关；最年长年龄组的总清醒时间约为最年轻组的两倍，这主要是由于睡眠开始后的清醒时间增加，因为睡眠潜伏期并不随年龄变化。在三个年龄组中的每一组内，尤其是两个最年长的组，睡眠开始后最大量的清醒发生在记录期的最后几个小时。男性睡眠的特点是夜间觉醒次数较多，老年男性的特点是最后一次觉醒时间较长；然而，睡眠效率的其他参数在性别之间没有显著差异。
