PDF(Pubmed)
Abstract：
It has long been thought that links between affect and sleep are bidirectional. However, few studies have directly assessed the relationships between: (1) pre-sleep affect and sleep electroencephalogram (EEG) activity; and (2) sleep EEG activity and post-sleep affect. This study aims to systematically explore the correlations between pre-/post-sleep affect and EEG activity during sleep. In a community sample of adults (n = 51), we measured participants\' positive and negative affect in the evening before sleep and in the next morning after sleep. Participants slept at their residence for 1 night of EEG recording. Using Fourier transforms, the EEG power at each channel was estimated during rapid eye movement sleep and non-rapid eye movement sleep for the full range of sleep EEG frequencies. We first present heatmaps of the raw correlations between pre-/post-sleep affect and EEG power during rapid eye movement and non-rapid eye movement sleep. We then thresholded the raw correlations with a medium effect size |r| ≥ 0.3. Using a cluster-based permutation test, we identified a significant cluster indicating a negative correlation between pre-sleep positive affect and EEG power in the alpha frequency range during rapid eye movement sleep. This result suggests that more positive affect during the daytime may be associated with less fragmented rapid eye movement sleep that night. Overall, our exploratory results lay the foundation for confirmatory research on the relationship between daytime affect and sleep EEG activity.
摘要：
长期以来，人们一直认为情感和睡眠之间的联系是双向的。然而,很少有研究直接评估之间的关系：（1）睡眠前影响和睡眠脑电图（EEG）活动；（2）睡眠脑电图活动和睡眠后影响。本研究旨在系统地探讨睡眠前/后影响与睡眠期间脑电图活动之间的相关性。在成年人的社区样本中(n=51)，我们测量了参与者在睡觉前的晚上和睡觉后的第二天早上的积极和消极的影响。参与者在他们的住所睡觉1晚的脑电图记录。使用傅立叶变换，在快速眼动睡眠和非快速眼动睡眠期间，对于全范围的睡眠EEG频率，估计每个通道的EEG功率。我们首先介绍快速眼动和非快速眼动睡眠期间睡眠前/后影响与EEG功率之间的原始相关性的热图。然后，我们用中等效应大小|r|≥0.3对原始相关性进行了阈值化。使用基于集群的置换测试，我们发现了一个显著的聚类,表明在快速眼动睡眠期间,睡眠前积极影响与α频率范围内的EEG功率呈负相关.这一结果表明，白天更积极的影响可能与当晚不那么分散的快速眼动睡眠有关。总的来说,我们的探索性结果为白天影响与睡眠脑电活动之间关系的验证性研究奠定了基础。
