Leynes P Andrew, Grey Jeremy A, Crawford Jarret T
Department of Psychology, The College of New Jersey, Ewing, NJ 08628-0718, United States.
Int J Psychophysiol. 2006 Oct;62(1):193-202. doi: 10.1016/j.ijpsycho.2006.04.003.
Memory for performed and motioned actions was measured on source recognition and source recall tests in order to investigate memory for actions or output monitoring (OM). Event-related potentials (ERPs) were recorded during the source recognition test to provide insight into the basis of OM. Source identification and recall of performed actions was greater than motioned actions indicating that sensory characteristics provide unique information for action memories. The ERP data supported this interpretation because the brain activity elicited by performed actions differed from motioned and new actions. Early parietal ERP differences suggest that sensory information leads to selective recollection of performed actions or that more sensory information was activated by performed actions during remembering. A large late posterior negativity (LPN) was also observed in the absence of frontal ERP differences, which are typically observed during source monitoring. This pattern of ERP differences is evidence that frontal ERPs and the LPN reflect distinct source monitoring processes. Based on the available data, we argue that frontal ERPs reflect general decision processes that evaluate diagnostic information, whereas the LPN reflects processes that are engaged when a detailed inspection of information is required by the context.
为了研究对动作的记忆或输出监测（OM），我们在源识别和源回忆测试中测量了对已执行动作和示意动作的记忆。在源识别测试期间记录事件相关电位（ERP），以深入了解OM的基础。已执行动作的源识别和回忆高于示意动作，这表明感觉特征为动作记忆提供了独特的信息。ERP数据支持了这一解释，因为已执行动作引发的大脑活动不同于示意动作和新动作。早期顶叶ERP差异表明，感觉信息导致对已执行动作的选择性回忆，或者在记忆过程中已执行动作激活了更多的感觉信息。在没有通常在源监测期间观察到的额叶ERP差异的情况下，还观察到了一个较大的晚期后负波（LPN）。这种ERP差异模式证明额叶ERP和LPN反映了不同的源监测过程。基于现有数据，我们认为额叶ERP反映了评估诊断信息的一般决策过程，而LPN反映了在上下文需要对信息进行详细检查时所涉及的过程。
