Two routes to emotional memory: Distinct neural processes for valence and arousal
Two routes to emotional memory: Distinct neural processes for valence and arousal
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DOI：
10.1073/pnas.0306408101
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发表时间：
2004-03-02
影响因子：
11.1
通讯作者：
Corkin, S
中科院分区：
文献类型：
--
作者：
Kensinger, EA;Corkin, S
先前的研究表明，情绪信息往往比中性信息更好地记住，但他们没有直接对比归因于效价和那些归因于唤醒的效果。通过使用功能磁共振成像和行为研究，我们发现，不同的认知和神经过程有助于情绪记忆增强唤醒信息与valenced，nonarousing信息。前者依赖于杏仁核-海马网络，而后者则由参与受控编码过程的前额叶皮层-海马网络支持。一项采用分散注意力范式的行为同伴研究证实，对有价、非唤起性词语的记忆增强依赖于受控的编码过程：并发任务表现会降低增强效应。增强唤起的话自动发生，即使编码资源被转移到次要任务。
Prior investigations have demonstrated that emotional information is often better remembered than neutral information, but they have not directly contrasted effects attributable to valence and those attributable to arousal. By using functional MRI and behavioral studies, we found that distinct cognitive and neural processes contribute to emotional memory enhancement for arousing information versus valenced, nonarousing information. The former depended on an amygdalar-hippocampal network, whereas the latter was supported by a prefrontal cortex-hippocampal network implicated in controlled encoding processes. A behavioral companion study, with a divided-attention paradigm, confirmed that memory enhancement for valenced, nonarousing words relied on controlled encoding processes: concurrent task performance reduced the enhancement effect. Enhancement for arousing words occurred automatically, even when encoding resources were diverted to the secondary task.