Dynamic Effects of Self-Relevance and Task on the Neural Processing of Emotional Words in Context.
Dynamic Effects of Self-Relevance and Task on the Neural Processing of Emotional Words in Context.
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DOI：
10.3389/fpsyg.2015.02003
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发表时间：
2015
影响因子：
3.8
通讯作者：
Kuperberg GR
中科院分区：
文献类型：
--
作者：
Fields EC;Kuperberg GR
我们使用事件相关电位(ERPs)来考察任务、情绪和语境自我关联在社会小场景中加工单词时的交互作用。参与者阅读第三人称(他人相关)或第二人称(自我相关)的情景，我们将事件相关电位记录到一个中性、令人愉快或令人不快的批评词。在之前报道的一项关于这些刺激的研究中，参与者被要求产生第三个句子，继续这个场景。我们观察到，在自相关和其他相关情景下，情绪词的LPC都大于中性词，但在自相关情景中，这种影响较小，因为中性词的LPC更大(即，自我相关的LPC比其他相关的中性词大)。在目前的工作中，参与者只是回答了一些理解问题，这些问题没有提到情景中的情感方面。在这里，我们观察到了自我关联和情绪之间的一种完全不同的交互模式：仅在自我关联情景中，情绪词的LPC比中性词大，而自我关联对中性词没有影响。综上所述，这些发现表明，LPC反映了特定任务要求、刺激的情绪属性和背景自我关联之间的动态交互作用。最后，我们讨论了情绪LPC功能理论的含义和未来的发展方向。
We used event-related potentials (ERPs) to examine the interactions between task, emotion, and contextual self-relevance on processing words in social vignettes. Participants read scenarios that were in either third person (other-relevant) or second person (self-relevant) and we recorded ERPs to a neutral, pleasant, or unpleasant critical word. In a previously reported study with these stimuli, participants were tasked with producing a third sentence continuing the scenario. We observed a larger LPC to emotional words than neutral words in both the self-relevant and other-relevant scenarios, but this effect was smaller in the self-relevant scenarios because the LPC was larger on the neutral words (i.e., a larger LPC to self-relevant than other-relevant neutral words). In the present work, participants simply answered comprehension questions that did not refer to the emotional aspects of the scenario. Here we observed quite a different pattern of interaction between self-relevance and emotion: the LPC was larger to emotional vs. neutral words in the self-relevant scenarios only, and there was no effect of self-relevance on neutral words. Taken together, these findings suggest that the LPC reflects a dynamic interaction between specific task demands, the emotional properties of a stimulus, and contextual self-relevance. We conclude by discussing implications and future directions for a functional theory of the emotional LPC.