Pérusse Alexandra D, Pedneault-Drolet Maude, Rancourt Christine, Turcotte Isabelle, St-Jean Geneviève, Bastien Célyne H
École de psychologie, 2325 rue des Bibliothèques, Université Laval, Québec, QC, G1V 0A6, Canada; Laboratoire de sommeil et potentiels évoqués cognitifs, 2525 chemin de la Canardière, Centre de recherche de l'Institut universitaire en santé mentale de Québec, Québec, QC,G1J 2G2, Canada.
Int J Psychophysiol. 2015 Mar;95(3):372-8. doi: 10.1016/j.ijpsycho.2015.01.005. Epub 2015 Jan 14.
The objective was to study REM sleep macrostructure and microstructure as potential indicators of hyperarousal in insomnia by comparing good sleepers (GS) and insomnia sufferers (INS) (subdivided into psychophysiological "PSY-I" and paradoxical "PARA-I").
Cross-sectional comparisons of GS, PSY-I and PARA-I.
Participants slept for 4 consecutive nights in the laboratory where PSG was recorded. Nights 2 and 3 were combined to compare REM sleep between groups.
Thirty-nine PSY-I, 27 PARA-I and 47 GS completed the study, comprising home questionnaires, clinical interviews and night PSG recordings. All participants were aged between 25 and 55 and met inclusion criteria for either PSY-I, PARA-I or GS.
INTERVENTIONS N/A MEASUREMENTS AND RESULTS: Results showed no between group differences on REM sleep macrostructure. As for REM sleep microstructure, PSY-I had an increased number of wake intrusions compared to PARA-I (p=.03). Subjective SE, TST and TWT were significantly correlated with the duration of REM sleep (REMD; p≤.002) and with the proportion of REM sleep for PARA-I (p≤.06).
REM sleep macrostructure does not seem to be an adequate indicator of hyperarousal in insomnia. However, the number of wake intrusions in REM could be used to differentiate PSY-I from PARA-I and could reflect the heightened arousal of the former group. Relationships between REM sleep duration and proportion could be linked to dream imagery activity, especially in PARA-I. Further investigations are needed to identify variables that could reflect hyperarousal and differentiate insomnia types.
通过比较睡眠良好者（GS）和失眠患者（INS，分为心理生理性“PSY - I”和矛盾性“PARA - I”），研究快速眼动（REM）睡眠的宏观结构和微观结构，作为失眠中过度觉醒的潜在指标。
GS、PSY - I和PARA - I的横断面比较。
参与者在记录多导睡眠图（PSG）的实验室连续睡4晚。将第2晚和第3晚合并以比较组间的REM睡眠。
39名PSY - I患者、27名PARA - I患者和47名GS完成了研究，包括家庭问卷、临床访谈和夜间PSG记录。所有参与者年龄在25至55岁之间，符合PSY - I、PARA - I或GS的纳入标准。
干预措施 无 测量与结果：结果显示组间在REM睡眠宏观结构上无差异。至于REM睡眠微观结构，与PARA - I相比，PSY - I的觉醒侵入次数增加（p = 0.03）。主观睡眠效率（SE）、总睡眠时间（TST）和总觉醒时间（TWT）与REM睡眠时间（REMD；p≤0.002）以及PARA - I的REM睡眠比例显著相关（p≤0.06）。
REM睡眠宏观结构似乎不是失眠中过度觉醒的充分指标。然而，REM中的觉醒侵入次数可用于区分PSY - I和PARA - I，并可反映前一组的觉醒增强。REM睡眠时间和比例之间的关系可能与梦境意象活动有关，尤其是在PARA - I中。需要进一步研究以确定可反映过度觉醒并区分失眠类型的变量。
