Brain potentials reflecting spontaneous retrieval of emotional long-term memories

Brain potentials reflecting spontaneous retrieval of emotional long-term memories
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反映情绪长期记忆自发检索的大脑电位

DOI:
10.1080/17588928.2014.916259
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发表时间:
2014
影响因子:
2
通讯作者:
A. Hamm
A. Hamm
中科院分区:
医学4区
文献类型:
--
作者:
Anna Jaworek;M. Weymar;Andreas Löw;A. Hamm

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最近的ERP研究使用即时识别表明更好的回忆情绪,相对于中性,场景时,在任务中的记忆没有明确探测检索。在本研究中,我们研究了与外显和自发提取使用长保留时间间隔的ERP。在一个组间设计,一个星期后,偶然编码的情感和中性的场景,参与者进行了明确的识别任务或分类任务,同时查看旧的和新的图片。增强ERP旧/新的差异被发现情绪和中性刺激在额叶区域和选择性的情绪图片在中央顶叶区域在外显识别,但在分类。在分类过程中,旧/新的差异只存在于情绪场景的额叶区域。总之,即使在长时间的记忆保留间隔之后,情绪记忆的自发提取也会发生,并且可能是基于熟悉度。
Recent ERP studies using immediate recognition suggest better recollection for emotional, relative to neutral, scenes when retrieved in tasks where memory is not explicitly probed. In the present study we examined ERPs associated with explicit and spontaneous retrieval using a long retention interval. In a between-group design, one week after incidental encoding of emotional and neutral scenes, participants performed either an explicit recognition task or a categorization task whilst viewing old and new pictures. Enhanced ERP old/new differences were found for emotional and neutral stimuli over frontal regions and selectively for emotional pictures over centro-parietal regions during explicit recognition, but not during categorization. During categorization, old/new differences were only present for emotional scenes over frontal regions. Taken together, spontaneous retrieval of emotional memories occurs even after long retention intervals and is probably based on familiarity.
自然的选择性关注:定向和情感。
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