Event-related Potential Evidence that Automatic Recollection Can Be Voluntarily Avoided
Event-related Potential Evidence that Automatic Recollection Can Be Voluntarily Avoided
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DOI：
10.1162/jocn.2009.21075
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发表时间：
2009-07-01
影响因子：
3.2
通讯作者：
Richardson-Klavehn, Alan
中科院分区：
文献类型：
--
作者：
Bergstroem, Zara M.;de Fockert, Jan;Richardson-Klavehn, Alan
当提取线索不能自动唤起所需的情景记忆时，志愿控制过程可以被用来促进回忆。我们调查了自愿控制过程是否也可以阻止回忆不想要的记忆，否则会自动回忆。参与者接受了线索联想词对的训练，然后反复呈现线索，并要求他们要么选择要么避免回忆联想词，同时测量与有意识回忆相关的事件相关电位（ERP）。在这个阶段进行到一半的时候，一些线索改变了指令，这样参与者就不得不开始避免回忆他们以前反复回忆过的同事，反之亦然。回忆回避过程中的ERP表现出显着降低的积极性相关的有意识的回忆，切换指令逆转ERP效果，即使是以前反复回忆的项目，这表明自愿控制过程可以覆盖高度实践，自动回忆。避免回忆特别是优势记忆与一个额外的，早期的ERP负性，是从后来的自觉回忆的自愿调制分离。这些发现通过强调自愿注意过程参与控制有意识的回忆，对记忆提取理论具有启示意义。
Voluntary control processes can be recruited to facilitate recollection in situations where a retrieval cue fails to automatically bring to mind a desired episodic memory. We investigated whether voluntary control processes can also stop recollection of unwanted memories that would otherwise have been automatically recollected. Participants were trained on cue-associate word-pairs, then repeatedly presented with the cue and asked to either recollect or avoid recollecting the associate, while having the event-related potential (ERP) correlate of conscious recollection measured. Halfway through the phase, some cues switched instructions so that participants had to start avoiding recall of associates they had previously repeatedly recalled, and vice versa. ERPs during recollection avoidance showed a significantly reduced positivity in the correlate of conscious recollection, and switching instructions reversed the ERP effect even for items that had been previously repeatedly recalled, suggesting that voluntary control processes can override highly practiced, automatic recollection. Avoiding recollection of particularly prepotent memories was associated with an additional, earlier ERP negativity that was separable from the later voluntary modulation of conscious recollection. The findings have implications for theories of memory retrieval by highlighting the involvement of voluntary attentional processes in controlling conscious recollection.