Coons S, Guilleminault C
Dev Med Child Neurol. 1984 Apr;26(2):169-76. doi: 10.1111/j.1469-8749.1984.tb04428.x.
Periods of sustained sleep were analyzed to assess the development of sleep-state organization and structure during the first six months of life. Infants first establish consolidated sleep and wakeful periods, which then become oriented to the 24-hour day/night cycle. As infants mature they gradually show greater sleep 'efficiency', and at onset of sleep, REM periods become less likely. The longest sleep period progressively becomes associated with the dark period of the 24-hour cycle. This study also assessed the sequences of NREM-REM sleep-cycle organization during the first six months of life. Although individual infants may have a significant correlation between duration of sleep and latency at onset of sleep, the over-all direction is not constant, nor is an 'age effect' apparent during the first six months. The data support the hypothesis that states of alterness , which develop independently in the perinatal period, become integrated in early infancy.
对持续睡眠阶段进行分析，以评估生命最初六个月期间睡眠状态组织和结构的发展。婴儿首先建立起巩固的睡眠和清醒阶段，随后这些阶段开始适应24小时的昼夜循环。随着婴儿的成熟，他们逐渐表现出更高的睡眠“效率”，并且在入睡时，快速眼动（REM）阶段出现的可能性降低。最长的睡眠阶段逐渐与24小时周期的黑暗时段相关联。本研究还评估了生命最初六个月期间非快速眼动（NREM）-快速眼动睡眠周期组织的顺序。尽管个别婴儿的睡眠时间和入睡潜伏期之间可能存在显著相关性，但总体趋势并不恒定，在最初六个月期间也未出现明显的“年龄效应”。这些数据支持了这样一种假设，即在围产期独立发展的交替状态在婴儿早期会整合在一起。
