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首页> 外文期刊>Brain research >Motivated forgetting increases the recall time of learnt items: Behavioral and event related potential evidence
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Motivated forgetting increases the recall time of learnt items: Behavioral and event related potential evidence

机译：动机遗忘增加了学习项目的召回时间：行为和事件相关的潜在证据

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摘要

We investigated modulation of the recall time in a motivated forgetting (MF) paradigm and the neural manifestation of it through event related potential (ERP) analysis. We studied whether compared to failed attempts in suppression, partial success can potentiate control mechanisms and this might manifest, neurally as modulation of ERP components related to conscious recollection, and behaviorally as delayed recall of learnt items. We employed a modified version of the Think No-Think paradigm with dominant number of No-Think words (cued to forget). We defined a forgetting index as FI = Final Recall Time-Initial Recall Time. The MF trials were separated into three conditions according to their corresponding FI; Forget, Delayed Recall, and Recall conditions. The findings revealed significant late ERP effects in terms of a late parietal positivity (LPP), modulated by the item condition, that appeared to reflect the consequence of conscious suppression on actual retrieval of stored memory. Over the same topographic location, FI was negatively correlated with the LPP amplitude, demonstrating the consequence of inhibition processing during MF in modulating the recall time. The negative correlation between LPP and FI provides evidence that increased recall time due to MF is also related to reduced activity, probably in the hippocampal-parietal network, corresponding to recollection of suppressed memories.
机译：我们通过事件相关电位（ERP）分析调查了在动机忘记（MF）范式中的调查时间和IT的神经表现。我们研究了与抑制的失败尝试相比，部分成功可以提高控制机制，这可能表现出与有意识的回忆相关的ERP组件的显现，并且行为地作为学习项目的延迟回忆。我们雇用了一个修改版的想法 no-wiking范式，具有占主导地位的无思想词语（旨在忘记）。我们将遗忘索引定义为FI = Final Recall时间初始召回时间。根据其相应的FI，MF试验分为三种条件;忘记，延迟召回和记忆条件。结果表明，通过物品条件调节的晚期阳性阳性（LPP）揭示了显着的已故ERP效应，似乎反映了在实际检索存储内存的有意识抑制的后果。在相同的地形位置，Fi与LPP幅度负相关，证明在调制召回时间时MF期间的抑制处理的结果。 LPP和FI之间的负相关性提供了增加由于MF引起的召回时间增加的证据也与减少的活动有关，可能是对应于抑制存储器的回忆的对应于海马 - 图际网络。

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