Department of Psychology, The College of New Jersey, P.O. Box 7718, Ewing, NJ 08628, USA.
Int J Psychophysiol. 2012 Jun;84(3):284-95. doi: 10.1016/j.ijpsycho.2012.03.007. Epub 2012 Apr 5.
Event-related potentials (ERPs) were recorded during a reality monitoring (RM) task (i.e., discriminating between seen and imagined words) and during an internal source monitoring (ISM) task (i.e., discriminating between self-generated and imagined words). Behavioral measures indicated robust recollection during both tests with greater recollection during ISM. The ERP correlate of recollection, the parietal old/new effect, was observed for both seen and imagined words during RM but only for self-generated words during ISM. This evidence indicates that self-generated information was diagnostic of source and that recollection of imagined words was based on the absence of self-generated information during ISM. The late posterior negativity (LPN) ERP old/new effects were observed for all conditions; however, the generated word LPN was attenuated during ISM. This pattern is consistent with the hypothesis that it reflects continued evaluation of trace information and suggests that recovery of self-generated information does not initiate an extensive evaluation of memory characteristics.
事件相关电位（ERPs）在现实监测（RM）任务（即区分所见和想象的单词）和内部来源监测（ISM）任务（即区分自我产生和想象的单词）期间被记录。行为测量表明，在这两种测试中都有强烈的回忆，在 ISM 中回忆更多。在 RM 期间，对所见和想象的单词都观察到了回忆的 ERP 相关物，即顶叶新旧效应，但在 ISM 期间仅对自我产生的单词观察到了这一效应。这一证据表明，自我产生的信息是来源的诊断依据，而对想象单词的回忆则是基于 ISM 期间没有自我产生的信息。所有条件下都观察到了晚期后负电位（LPN）ERP 新旧效应；然而，在 ISM 期间，生成词的 LPN 被削弱了。这种模式与假设一致，即它反映了对痕迹信息的持续评估，并表明自我生成信息的恢复不会启动对记忆特征的广泛评估。
