Ganushchak Lesya Y, Schiller Niels O
Department of Cognitive Psychology, Leiden Institute for Brain and Cognition, The Netherlands.
J Cogn Neurosci. 2008 May;20(5):927-40. doi: 10.1162/jocn.2008.20514.
Speakers continuously monitor what they say. Sometimes, self-monitoring malfunctions and errors pass undetected and uncorrected. In the field of action monitoring, an event-related brain potential, the error-related negativity (ERN), is associated with error processing. The present study relates the ERN to verbal self-monitoring and investigates how the ERN is affected by auditory distractors during verbal monitoring. We found that the ERN was largest following errors that occurred after semantically related distractors had been presented, as compared to semantically unrelated ones. This result demonstrates that the ERN is sensitive not only to response conflict resulting from the incompatibility of motor responses but also to more abstract lexical retrieval conflict resulting from activation of multiple lexical entries. This, in turn, suggests that the functioning of the verbal self-monitoring system during speaking is comparable to other performance monitoring, such as action monitoring.
说话者会持续监控自己所说的话。有时，自我监控出现故障且错误未被察觉和纠正。在动作监控领域，一种与事件相关的脑电活动，即错误相关负波（ERN），与错误处理相关。本研究将ERN与言语自我监控联系起来，并探究在言语监控过程中ERN如何受到听觉干扰物的影响。我们发现，与语义不相关的干扰物相比，在呈现语义相关的干扰物之后出现的错误之后，ERN最大。这一结果表明，ERN不仅对由运动反应不兼容导致的反应冲突敏感，而且对由多个词汇项激活导致的更抽象的词汇检索冲突也敏感。反过来，这表明说话过程中言语自我监控系统的功能与其他表现监控（如动作监控）相当。
