Palm L, Persson E, Elmqvist D, Blennow G
Department of Clinical Neurophysiology, University Hospital, Lund, Sweden.
Sleep. 1989 Aug;12(4):299-308. doi: 10.1093/sleep/12.4.299.
Eighteen healthy children, 9 boys and 9 girls, between 8 and 12 years of age were examined with polygraphic sleep records, multiple sleep latency tests (MSLTs), and measurements of reaction times. Sleep was recorded at home on Oxford Medilog 9 channel cassette tape recorders (Oxford Medical Systems, Abingdon, U.K.) and sleep staging was performed from the screen of the display unit. Two consecutive nights were recorded. MSLT was done in the laboratory. The subjects were given 30 min to fall asleep on four occasions during the day after the last recorded night of sleep. Reaction times were measured repeatedly between each MSLT trial. More slow wave sleep was found in this study compared to others. Also, the first night effect was slight. It is proposed that this is due to the fact that the recordings were performed at home. The initial sleep cycle was incomplete in almost all subjects. A sleep stage with traits of both rapid eye movement (REM) and non-REM could be seen in this cycle, probably representing an abortive REM period. MSLT confirmed the low daytime sleepiness in healthy preadolescent children. A sleep latency of 10 min or less on two or more sleep trials, or a daily mean sleep latency of less than 20 min, is rarely seen in this age group. The reaction times were within normal limits for the age of the subjects. Nighttime sleep values, daytime sleep latencies, and reaction times were not correlated in these normal-sleeping children.
对18名8至12岁的健康儿童（9名男孩和9名女孩）进行了多导睡眠记录、多次睡眠潜伏期测试（MSLT）以及反应时间测量。睡眠记录在家中使用牛津Medilog 9通道盒式磁带录音机（牛津医疗系统公司，英国阿宾登）进行，睡眠分期在显示单元的屏幕上进行。记录了连续两个晚上的睡眠情况。MSLT在实验室进行。在最后一次记录睡眠的夜晚后的白天，让受试者有4次机会在30分钟内入睡。在每次MSLT试验之间反复测量反应时间。与其他研究相比，本研究发现更多的慢波睡眠。此外，首夜效应轻微。据推测，这是由于记录是在家中进行的。几乎所有受试者的初始睡眠周期都不完整。在这个周期中可以看到一个兼具快速眼动（REM）和非快速眼动特征的睡眠阶段，可能代表一个夭折的REM期。MSLT证实健康的青春期前儿童白天嗜睡程度较低。在这个年龄组中，很少见到在两次或更多次睡眠试验中睡眠潜伏期为10分钟或更短，或每日平均睡眠潜伏期小于20分钟的情况。受试者的反应时间在其年龄的正常范围内。在这些睡眠正常的儿童中，夜间睡眠值、白天睡眠潜伏期和反应时间之间没有相关性。
