Shimizu A, Takehashi H, Sumitsuji N, Tanaka M, Yoshida I, Kaneko Z
Electroencephalogr Clin Neurophysiol. 1977 Nov;43(5):658-65. doi: 10.1016/0013-4694(77)90080-3.
In 51 normal young female subjects, stimulation by name calling or by intermittent photic stimulation was given during sleep. At different intervals after the stimulation, the subject was awakened and asked if she could recall it. If alpha activity had not been elicited by the stimulus, there was no recall. If the time occupied by alpha activity evoked by the stimulation was more than 30 sec, the stimulus could be recalled after a long period of sleep. When the evoked alpha activity lasted for less than 30 sec and the subject slept again, the longer the evoked alpha activity, the longer the sleeping time span with the memory retention of the preceding stimulation. With equal durations of evoked alpha activity, retention of the stimulus was better when the sleep following was REM stage than when it was NREM stage (stage 2). The results might be explained by the assumption that process of consolidation takes place most rapidly during wakefulness and is inhibited during sleep but to a lesser degree during REM stage than during NREM stage (stage 2).
在51名正常年轻女性受试者睡眠期间，通过叫名字或间歇性光刺激进行刺激。在刺激后的不同间隔时间，唤醒受试者并询问她是否能回忆起刺激。如果刺激未引发α波活动，则无法回忆起来。如果刺激诱发的α波活动持续时间超过30秒，那么在长时间睡眠后可以回忆起该刺激。当诱发的α波活动持续时间少于30秒且受试者再次入睡时，诱发的α波活动持续时间越长，对先前刺激的记忆保留的睡眠时间跨度就越长。在诱发的α波活动持续时间相等的情况下，随后为快速眼动（REM）期睡眠时对刺激的保留比为非快速眼动（NREM）期（2期）睡眠时更好。这些结果可以用以下假设来解释，即巩固过程在清醒时发生得最快，在睡眠期间受到抑制，但在快速眼动期比在非快速眼动期（2期）受到的抑制程度较小。
