How emotion enhances the feeling of remembering
How emotion enhances the feeling of remembering
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DOI：
10.1038/nn1353
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发表时间：
2004-12-01
影响因子：
25
通讯作者：
Phelps, EA
中科院分区：
文献类型：
--
作者：
Sharot, T;Delgado, MR;Phelps, EA
对引起“现实生活”事件的记忆进行检查的研究表明，情绪会增强记忆的感觉，但不一定会提高记忆的客观准确性。我们测量了与记住情感和中性照片的感觉相关的大脑活动。受试者表明识别是否伴随着对研究事件细节的回忆（“记住”）或不（“知道”）。对情感照片的“记住”判断有所提高，但准确性没有差异。对于中性照片，“记住”判断与海马旁皮层的活动增强有关，而海马旁皮层以前与视觉细节的识别有关，人们可能期望视觉细节的识别为“记住”判断提供检索线索。相比之下，对情感照片的“记住”判断与杏仁核活动的增强有关，这表明受试者依靠唤醒和知觉流畅性来评估这些记忆。我们第一次确定了增强情绪事件记忆感背后的神经机制。
Studies examining memories of arousing 'real-life' events show that emotion heightens the feeling of remembering, without necessarily enhancing the objective accuracy of the memories. We measured brain activity associated with the feeling of remembering emotional and neutral photos. Subjects indicated whether recognition was accompanied by a recollection of details about the study episode ('remember') or not ('know'). 'Remember' judgments were boosted for emotional photos, but accuracy did not differ. For neutral photos, 'remember' judgments were related to enhanced activity in the parahippocampal cortex, previously related to recognition of visual details, which one might expect to supply the retrieval clues for a 'remember' judgment. In contrast, 'remember' judgments for emotional photos were associated with enhanced activity in the amygdala, suggesting that subjects rely on arousal and perceptual fluency to evaluate these memories. For the first time, we identify the neural mechanisms underlying the enhanced feeling of remembering for emotional events.