Lavie P, Segal S
Sleep Laboratory, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa.
Sleep. 1989 Dec;12(6):522-8.
"Morning" and "evening" persons, defined according to a modified version of the Horne and Ostberg questionnaire, performed the 7/13 min sleep-waking schedule under attempting sleep condition after sleeping for one night in the laboratory, and under the resisting sleep condition after one night of sleep deprivation. Morning types slept significantly more under the attempting sleep condition and showed an earlier rise in nocturnal sleepiness. After sleep deprivation, morning types had a more distinct sleep propensity pattern with well-defined midafternoon and nocturnal sleep gates. In this condition there was a significant interaction between type and time of day with respect to amount of sleep: morning types slept more during the night, and evening types slept more during the day. Based on their amounts of sleep, subjects were also divided into "sleepy" and "alert" types, which were independent from the chronotypology.
根据霍恩和奥斯特伯格问卷的修改版定义的“早起型”和“晚睡型”人群，在实验室睡了一晚后，于试图入睡的条件下执行7/13分钟睡眠-清醒时间表，并在一晚睡眠剥夺后于抵抗睡眠的条件下执行该时间表。早起型在试图入睡的条件下睡眠明显更多，且夜间嗜睡出现得更早。睡眠剥夺后，早起型有更明显的睡眠倾向模式，有明确的午后中段和夜间睡眠窗口。在这种情况下，就睡眠时间而言，类型和一天中的时间之间存在显著的交互作用：早起型在夜间睡眠更多，而晚睡型在白天睡眠更多。根据睡眠时间，受试者还被分为“困倦型”和“警觉型”，这与昼夜节律类型无关。
