The neural correlates of dreaming.
The neural correlates of dreaming.
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DOI：
10.1038/nn.4545
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发表时间：
2017-06
影响因子：
25
通讯作者：
Tononi G
中科院分区：
文献类型：
--
作者：
Siclari F;Baird B;Perogamvros L;Bernardi G;LaRocque JJ;Riedner B;Boly M;Postle BR;Tononi G
意识在觉醒过程中永不褪色。然而，如果从睡眠中醒来，我们有时会报告做梦，有时会报告没有经历。传统上，做梦被认为是快速眼动睡眠，其特征是一种类似清醒的、全球范围内“激活”的高频脑电。然而，做梦也发生在NREM睡眠中，其特征是显著的低频活动。这挑战了我们对睡眠中有意识体验的神经关联的理解。使用高密度脑电，我们对比了非快速眼动睡眠和快速眼动睡眠中做梦的存在和不存在。在NREM和REM睡眠中，梦境体验的报道与皮层后部区域局部低频活动的减少有关。这些区域内的高频活动与特定的梦境内容相关。监测这个后部的“热区”，可以实时预测一个人在NREM睡眠期间是否报告做梦或没有体验，这表明它可能构成睡眠中有意识体验的核心关联。
Consciousness never fades during wake. However, if awakened from sleep, sometimes we report dreams and sometimes no experiences. Traditionally, dreaming has been identified with REM sleep, characterized by a wake-like, globally ‘activated’, high-frequency EEG. However, dreaming also occurs in NREM sleep, characterized by prominent low-frequency activity. This challenges our understanding of the neural correlates of conscious experiences in sleep. Using high-density EEG, we contrasted the presence and absence of dreaming within NREM and REM sleep. In both NREM and REM sleep, reports of dream experience were associated with a local decrease in low-frequency activity in posterior cortical regions. High-frequency activity within these regions correlated with specific dream contents. Monitoring this posterior ‘hot zone’ predicted whether an individual reported dreaming or the absence of experiences during NREM sleep in real time, suggesting that it may constitute a core correlate of conscious experiences in sleep.