School of Psychology Laval University, Quebec, Canada.
Behav Sleep Med. 2013;11(1):56-72. doi: 10.1080/15402002.2012.660896.
This study compared cortical arousal mechanisms during the night using event-related potentials (N1 and P2), and compared sleep misperception in 30 adults with psychophysiological insomnia (Psy-I), 28 adults with paradoxical insomnia (Para-I), and 30 good sleepers (GS). Participants (age range = 25-55 years) spent 4 consecutive nights in the laboratory, and Night-4 data were used for analysis. N1 amplitude was generally larger in both insomnia groups compared to GS, and P2 amplitude was larger in Para-I than in the 2 other groups, especially in REM sleep. Results suggest that, although hyperarousal appears to persist during sleep in adults with insomnia, inhibition deficits are more likely to be present in Para-I compared to Psy-I.
本研究使用事件相关电位（N1 和 P2）比较了夜间的皮质唤醒机制，并比较了 30 名心理生理性失眠（Psy-I）患者、28 名矛盾性失眠（Para-I）患者和 30 名睡眠良好者（GS）的睡眠错觉。参与者（年龄范围=25-55 岁）在实验室中连续度过 4 个晚上，使用第 4 晚的数据进行分析。与 GS 相比，N1 振幅在两个失眠组中普遍较大，而 P2 振幅在 Para-I 中比在另外两组中更大，尤其是在 REM 睡眠中。结果表明，尽管失眠成年人在睡眠中似乎仍然存在过度唤醒，但与 Psy-I 相比，Para-I 更有可能存在抑制缺陷。
