Electrophysiological correlates of the retrieval of emotional and non-emotional context
Electrophysiological correlates of the retrieval of emotional and non-emotional context
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DOI：
10.1162/089892901753165809
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发表时间：
2001-10-01
影响因子：
3.2
通讯作者：
Rugg, MD
中科院分区：
文献类型：
--
作者：
Maratos, EJ;Rugg, MD
在两个实验中，单词以否定或中性的句子呈现。在测试中，受试者对这些单词做出旧/新的识别判断。仅在实验 2 中，对于被判断为旧的单词，受试者还表明这些单词是否是在中性或负面上下文中研究过的。在实验1中，当由否定句中研究过的单词引起时，左顶叶旧/新事件相关脑电位（ERP）效应更大且更持久，而右额叶旧/新效应仅由这些单词引起。在实验 2 中，无论上下文的性质如何，正确分配到其学习上下文的旧单词所引起的左顶叶和右额叶效应在大小上都是相等的；第三个 ERP 旧/新效应，在后头皮区域最大，仅在来自负面语境的单词中可见。研究结果表明，与非情感背景的检索相比，情感背景的偶然检索会在支持有意识回忆的神经系统中产生更大的激活。当上下文检索是有意的时，情感和非情感信息的回忆与这些系统的同等参与相关联。实验 2 的结果表明，额外的神经回路可能会被情绪化的情景信息选择性地激活。
In two experiments, words were presented in negatively or neutrally valenced sentences. At test, subjects made old/new recognition judgments to these words. In Experiment 2 only, for words judged old, subjects also indicated whether the words had been studied in a neutral or a negative context. In Experiment 1, left parietal old/new event-related brain potential (ERP) effects were larger and more sustained when elicited by words that had been studied in negative sentences, and a right frontal old/new effect was elicited by these words exclusively. In Experiment 2, the left parietal and right frontal effects elicited by old words correctly assigned to their study context were equivalent in size regardless of the nature of the context; a third ERP old/new effect, maximal over posterior scalp regions, was seen only for words from negative contexts. The findings indicate that incidental retrieval of emotional context gives rise to greater activation in neural systems supporting conscious recollection than does retrieval of nonemotional context. When contextual retrieval is intentional, recollection of emotional and non-emotional information are associated with equivalent engagement of these systems. The findings from Experiment 2 suggest that additional neural circuitry may be activated selectively by emotionally valenced episodic information.