Sleep during and after gradual sleep reduction.
Sleep during and after gradual sleep reduction.
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在逐渐减少睡眠期间和之后睡眠。
DOI：
10.1111/j.1469-8986.1977.tb01168.x
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发表时间：
1977
期刊：
影响因子：
3.7
通讯作者：
G. Globus
中科院分区：
文献类型：
--
作者：
D. J. Mullaney;L. Johnson;P. Naitoh;J. Friedmann;G. Globus
要确定：1）受试者可以忍受的最低睡眠量，2）EEG睡眠测量的变化，以及3）受试者在研究终止后是否会恢复到基线睡眠，4对夫妇逐渐减少了他们的睡眠。三对夫妇在30分钟内从8小时的基线开始降低TST，一对夫妇从6.5小时的基线开始降低TST。每天收集睡眠时间、睡眠质量和情绪的主观估计。每周3个晚上获得家庭EEG睡眠记录。
8小时睡眠者中有2人将睡眠时间减少到5.5小时，2人减少到5.0小时，2人达到4.5小时。这6名受试者在减量终止后一年继续睡眠低于基线量1至2.5小时。6.5小时基线配对达到5.0小时，并在随访期间恢复至6.5小时TST。
阶段W、2和REM的绝对量显著下降。阶段W和2的百分比也显著降低。REM百分比保持不变。第3阶段是恒定的，而第4阶段增加的绝对和相对量。REM周期长度保持不变。在睡眠减少最多的时候，没有观察到7小时夜间的第4阶段反弹。当TST低于6.5小时时，2例受试者在第1阶段发作后10分钟内出现REM阶段。
我们的研究结果与其他缩短睡眠的研究一致，表明TST是睡眠阶段特征的主要决定因素。
To determine: 1) the minimum amounts of sleep subjects would tolerate, 2) the changes in EEG sleep measures, and 3) whether subjects would revert to baseline sleep after study termination, 4 couples gradually reduced their sleep. Three couples reduced their TST in 30-min steps from a baseline of 8 hrs and one couple from a baseline of 6.5 hrs. Subjective estimates of sleep time, sleep quality, and mood were collected daily. Home EEG sleep recordings were obtained 3 nights a week.
Two of the 8-hr sleepers reduced their sleep to 5.5 hrs, 2 to 5.0 hrs, and 2 reached 4.5 hrs. These 6 subjects continued sleeping 1 to 2.5 hrs below baseline amounts a year after reduction terminated. The 6.5-hr baseline couple reached 5.0 hrs and returned to 6.5 hrs TST during follow-up.
Stages W, 2, and REM decreased significantly in absolute amounts. Percentage of stages W and 2 also decreased significantly. REM percent remained constant. Stage 3 was constant while stage 4 increased in both absolute and relative amounts. REM cycle length remained constant. Stage 4 rebound on 7-hr nights was not observed during times of greatest sleep reduction. Occurrences of stage REM within 10 min of stage 1 onset were observed in 2 subjects when their TST was below 6.5 hrs.
Our results are consistent with other studies of shortened sleep, indicating that TST is the major determinant of sleep-stage characteristics.