Task characteristics are critical for the use of familiarity: An ERP study on episodic memory development in middle childhood
Task characteristics are critical for the use of familiarity: An ERP study on episodic memory development in middle childhood
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DOI：
10.1016/j.cogdev.2016.08.008
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发表时间：
2016-10-01
影响因子：
1.8
通讯作者：
Czernochowski, Daniela
中科院分区：
文献类型：
--
作者：
Haese, Andre;Czernochowski, Daniela
基于低源记忆表现，儿童在情景记忆提取中经常被认为依赖于熟悉性。然而，额叶熟悉相关的事件相关电位(ERP)在儿童中通常不存在，这与反映回忆的显著的顶叶旧/新效应形成对比。在这篇文章中，我们呈现了偶然编码和有意编码后相同的和知觉变化的图片，以评估(A)相同的知觉项目特征或(B)故意编码促进的高记忆表现是否会在7岁(N=20)和10岁(N=20)儿童中引发与熟悉性相关的事件相关电位。尽管记忆表现普遍较高，但我们只在年龄较大的儿童中观察到了正面旧/新效应，在有意编码后，选择性地对感知上相同的项目进行了观察。相比之下，两组患者均观察到新旧顶叶效应。此外，顶叶晚期的旧/新效应对变化的项目的影响要小得多，这表明年龄较大的儿童使用额外的回忆搜索过程来区分相同和变化的项目。(C)2016 Elsevier Inc.保留所有权利。
Children have often been assumed to rely on familiarity in episodic memory retrieval, based on low source memory performance. However, the frontal familiarity-related event-related potential (ERP) correlate is typically absent in children, in contrast to a prominent parietal old/new effect reflecting recollection. Here, we presented identical and perceptually changed pictures after incidental and intentional encoding to assess whether (a) identical perceptual item features or (b) a high memory performance promoted by intentional encoding would elicit an ERP correlate associated with familiarity in 7-year-olds (N= 20) and 10-year-olds (N = 20). Despite generally high memory performance we observed frontal old/new effects in older children only, selectively for perceptually identical items after intentional encoding. By contrast, parietal old/new effects were observed in both groups. Furthermore, late parietal old/new effects were much smaller for changed items, suggesting that older children employed additional recollective search processes to differentiate between identical and changed items. (C) 2016 Elsevier Inc. All rights reserved.