Gelisse P, Crespel A
Explorations neurologiques et épileptologie, hôpital Gui-de-Chauliac, 80, avenue Fliche, 34295 Montpellier cedex 05, France.
Neurophysiol Clin. 2008 Feb;38(1):3-8. doi: 10.1016/j.neucli.2007.08.001. Epub 2007 Aug 31.
REM sleep resembles wakefulness or drowsiness. The pattern can be low-voltage, or else alpha-like. Alpha frequencies are present only during the tonic phases of REM sleep and, compared to wakefulness tracings, alpha activities are slightly slower by 1-2 Hz and are more monomorphic. The slow alpha-variant rhythm or subharmonic alpha pattern consists of rhythmic notched theta waves. It shares the same topography and reactivity with the alpha rhythm. We report its presence during the tonic phases of REM sleep without any modification in its morphology in the first case. In the second case, its morphology was similar to awakening but with slower amplitude. No alpha frequencies were found in REM sleep but only its slow alpha variant. This study provides evidence that REM sleep is a stage of sleep that contains rhythms similar to those seen during wakefulness and drowsiness.
快速眼动睡眠类似于清醒或困倦状态。其脑电图模式可以是低电压的，或者类似α波。α频率仅出现在快速眼动睡眠的紧张期，与清醒时的脑电图相比，α活动略慢1 - 2赫兹，且更具单一形态。慢α波变异节律或次谐波α波模式由有节律的锯齿状θ波组成。它与α波节律具有相同的脑电地形图和反应性。在第一个病例中，我们报告了它在快速眼动睡眠紧张期的存在，且其形态没有任何改变。在第二个病例中，其形态与清醒时相似，但波幅较慢。在快速眼动睡眠中未发现α频率，只发现了其慢α波变异。这项研究提供了证据，表明快速眼动睡眠是睡眠的一个阶段，其中包含与清醒和困倦时所见相似的节律。
