Enhanced selective memory consolidation following post-learning pleasant and aversive arousal
Enhanced selective memory consolidation following post-learning pleasant and aversive arousal
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DOI：
10.1016/j.nlm.2007.09.001
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发表时间：
2008-01-01
影响因子：
2.7
通讯作者：
Zorawski, Michael
中科院分区：
文献类型：
--
作者：
Liu, Denise Li Juan;Graham, Steven;Zorawski, Michael
众所周知，情绪调节记忆，通常通过学习后的唤醒来增强巩固。然而，这一现象的许多方面仍有待界定。例如，目前尚不清楚唤醒的类型是否相关（愉快与厌恶），唤醒是否选择性地增强某些刺激而不是其他刺激的记忆（情感与中性），刺激表征的哪些特定方面（要点与细节）受到影响，以及这些机制是否具有性别二态性。为了探索这些问题，178 名本科生参与者观看了一系列消极、积极和中性的图片。然后，他们以令人愉快的唤起、厌恶的唤起或中性视频的形式接受学习后的唤起操纵。一周后的免费回忆测试表明，愉快和厌恶的学习后唤醒都增强了对积极和消极刺激的记忆巩固，但不是中性刺激，与参与者的性别无关。对要点和细节方面的进一步分析表明，学习后的唤醒增强了对刺激要点的记忆。这项研究对于理解人类健康和病理的认知情感过程具有重要意义。 (C) 2007 Elsevier Inc. 保留所有权利。
It is well established that emotions modulate memory, typically enhancing consolidation through post-learning arousal. However, many aspects of this phenomenon have yet to be delineated. For example, it remains unclear whether or not the type of arousal is relevant (pleasant vs. aversive), whether arousal enhances memory selectively for some stimuli but not others (emotional vs. neutral), which specific aspects of the stimulus representation (gist vs. detail) are affected, and whether these mechanisms are sexually dimorphic. In order to explore these issues, 178 undergraduate participants viewed a series of negative, positive and neutral pictures. They were then subjected to a post-learning arousal manipulation in the form of a pleasantly arousing-, aversively arousing-, or neutral video. Free recall tests one week later indicated that both pleasant and aversive post-learning arousal enhanced memory consolidation for positive and negative but not neutral stimuli, independent of the participants' sex. Further analysis for gist and detail aspects suggests that post-learning arousal enhances memory for the gist of the stimuli. The study has implications for the understanding of healthy and pathological cognitive-affective processes in humans. (C) 2007 Elsevier Inc. All rights reserved.