Department of Psychology, Humboldt-Universitaet zu Berlin, Germany.
Int J Psychophysiol. 2010 Dec;78(3):299-307. doi: 10.1016/j.ijpsycho.2010.09.004. Epub 2010 Sep 18.
Effects of emotional word meaning have been studied exclusively for words in isolation but not in the context of sentences. We addressed this question within the framework of two-dimensional models of affect, conceiving emotion as a function of valence and arousal. Negative and neutral target verbs, embedded within sentences, were presented while event-related brain potentials (ERPs) and the activity of the Corrugator muscle were recorded. Twenty-one participants performed a semantic decision task on the target verbs. In contrast to single word studies no early posterior negativity was present. However, emotion effects in ERPs were evident in a late positive complex (LPC) for negative, high-arousal words in comparison to neutral words. Interestingly, the LPC was unaffected by pure arousal variation when valence was controlled for, indicating the importance of valence for this emotion-related ERP effect.
情感词的意义影响仅在孤立单词的研究中被探讨过，而不在句子语境中被探讨。我们在情感的二维模型框架内解决了这个问题，将情感概念化为效价和唤醒度的函数。负性和中性的目标动词嵌入在句子中，在记录事件相关脑电位（ERP）和皱眉肌活动的同时呈现。21 名参与者对目标动词执行语义决策任务。与单个单词研究不同，没有出现早期后负性。然而，与中性词相比，在 ERP 中出现了一个晚期正性复合波（LPC），表明对于负性、高唤醒度的词存在情绪效应。有趣的是，当效价得到控制时，纯唤醒度的变化对 LPC 没有影响，这表明效价对于这种与情绪相关的 ERP 效应很重要。
