Reduced Alpha power associated with the recall of mentation from Stage 2 and Stage REM sleep
Reduced Alpha power associated with the recall of mentation from Stage 2 and Stage REM sleep
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DOI：
10.1111/j.1469-8986.00143.x
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发表时间：
2004-03-01
期刊：
影响因子：
3.7
通讯作者：
Paquette, T
中科院分区：
文献类型：
--
作者：
Esposito, MJ;Nielsen, TA;Paquette, T
醒时α (8-12Hz)活动与认知过程之间的关系提高了睡眠时α与认知活动之间类似关系的可能性。我们假设在第二阶段和快速眼动睡眠期间α能量的下降将表明这些阶段睡眠状态的存在。计算了2期和REM睡眠觉醒的6个经典脑电带和3个α子带的绝对功率。在这两个阶段，回忆与较低的α功率有关，特别是与中α功率（9.5-11.5 Hz）有关。出乎意料的是，Delta功率（0.5-4.0 Hz）也有类似的效果。α效应可能反映了觉醒前几分钟的认知精细活动；然而，不能排除注意和记忆过程。Delta效应与之前观察到的睡眠中Alpha和Delta能量之间的规律联系是一致的。
Relationships between Alpha (8-12Hz) activity and cognitive processes during wakefulness raise the possibility of similar relationships between Alpha and cognitive activity during sleep. We hypothesized that Alpha power decreases during both Stage 2 and REM sleep would index the presence of sleep mentation in these stages. Absolute power for six classical EEG bands and three Alpha subbands was calculated for Stage 2 and REM sleep awakenings both with and without mentation recall. In both stages, recall was associated with lower Alpha power, especially with middle Alpha power (9.5-11.5 Hz). Unexpectedly, a similar effect for Delta power (0.5-4.0 Hz) was also observed. The Alpha effect may reflect cognitive elaboration active in the minutes preceding awakening; however, attention and memory processes cannot be excluded. The Delta effect is consistent with prior observations of regular linkages between Alpha and Delta power during sleep.