ERP old/new effects at different retention intervals in recency discrimination tasks
ERP old/new effects at different retention intervals in recency discrimination tasks
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DOI：
10.1016/j.cogbrainres.2003.09.006
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发表时间：
2004-01-01
期刊：
影响因子：
--
通讯作者：
Friedman, WJ
中科院分区：
文献类型：
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作者：
Curran, T;Friedman, WJ
识别记忆研究表明，事件相关脑电位（ERP）可能会涉及几个不同的记忆过程。特别是，两个ERP组件已被假设为相关的熟悉（FN 400旧/新的效果，300-500毫秒，前部）和回忆过程（顶叶旧/新的效果，400-800毫秒，后部）。FN 400旧/新效应的功能意义尚不确定，因为类似的旧/新差异已被证明在中等长的保留间隔时消失。本研究考察了在两种不同的近因辨别任务中，保持间隔（34 min，39 min，1 d）对FN 400和顶叶新/旧效应的影响。结果表明，FN 400的新旧效应可以在1天的保持间隔内保持，因此它可能会索引能够促进长期记忆的大脑过程。(C)2003 Elsevier B. V.保留所有权利。
Recognition memory studies have suggested that event-related brain potentials (ERPs) may tap into several different memory processes. In particular, two ERP components have been hypothesized as related to familiarity (FN400 old/new effect, 300-500 ms, anterior) and recollection processes (parietal old/new effect, 400-800 ms, posterior). The functional significance of the FN400 old/new effect is uncertain because similar old/new differences have been shown to disappear at moderately long retention intervals. The present study investigated the effects of retention interval (34 min, 39 min, or 1 day) on the FN400 and parietal old/new effects in two different recency discrimination tasks. The results suggest that the FN400 old/new effect can be maintained across 1-day retention intervals, so it may index brain processes capable of contributing to long-term memory. (C) 2003 Elsevier B.V. All rights reserved.