ERP profiles for face and word recognition are based on their status in semantic memory not their stimulus category
ERP profiles for face and word recognition are based on their status in semantic memory not their stimulus category
复制标题
面部和单词识别的 ERP 配置文件基于其在语义记忆中的状态，而不是其刺激类别
DOI：
10.1016/j.brainres.2014.02.010
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发表时间：
2014-04-04
期刊：
影响因子：
2.9
通讯作者：
Reder, Lynne
中科院分区：
文献类型：
--
作者：
Nie, Aiqing;Griffin, Michael;Reder, Lynne
先前的研究表明，面孔和文字的处理和记忆方式不同，这反映在两种刺激下不同的ERP模式上。具体来说，面部刺激在前区比后区对旧物品产生更大的晚期正偏转，而单词刺激在后区比前区产生更大的晚期正偏转。鉴于单词在被试长期记忆（LTM）中已有表征，而先前实验中使用的面部刺激是未知个体，我们进行了一项ERP研究，将面部和字母刺激与存在或不存在的先验（稳定或存在）记忆表征交叉。在编码过程中，被试判断刺激物是已知的（著名的面孔或真实的单词）还是未知的（未知的人或伪单词）。一项意外识别记忆测试要求受试者区分在编码阶段出现的刺激和没有出现的刺激。在比较未知面孔和单词时，ERP结果与之前的研究一致；然而，与不知名的面孔相比，著名面孔的后期ERP模式与单词更相似。这表明关键的ERP差异是由LTM中是否存在先验表征介导的，而不是刺激是否涉及字母或面孔。Elsevier B.V.出版
Previous research has suggested that faces and words are processed and remembered differently as reflected by different ERP patterns for the two types of stimuli. Specifically, face stimuli produced greater late positive deflections for old items in anterior compared to posterior regions, while word stimuli produced greater late positive deflections in posterior compared to anterior regions. Given that words have existing representations in subjects long-term memories (LTM) and that face stimuli used in prior experiments were of unknown individuals, we conducted an ERP study that crossed face and letter stimuli with the presence or absence of a prior (stable or existing) memory representation. During encoding, subjects judged whether stimuli were known (famous face or real word) or not known,(unknown person or pseudo-word). A surprise recognition memory test required subjects to distinguish between stimuli that appeared during the encoding phase and stimuli that did not. ERP results were consistent with previous research when comparing unknown faces and words; however, the late ERP pattern for famous faces was more similar to that for words than for unknown faces. This suggests that the critical ERP difference is mediated by whether there is a prior representation in LTM, and not whether the stimulus involves letters or faces. Published by Elsevier B.V.