Familiarity in source memory.
Familiarity in source memory.
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DOI：
10.1016/j.neuropsychologia.2012.06.027
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发表时间：
2012-09
期刊：
影响因子：
2.6
通讯作者：
Curran T
中科院分区：
文献类型：
--
作者：
Mollison MV;Curran T
熟悉性和回忆被认为是识别记忆的两个独立过程。事件相关电位(ERPs)分离了这些过程，早期(约300-500ms)与熟悉有关的额叶效应(FN400)和较晚(500-800ms)与回忆有关的顶叶旧/新效应。人们一直在争论，被研究物品的来源信息(即，来自之前遇到该物品的上下文关联)是只能通过回忆才能获得的，还是熟悉度有助于成功的来源识别。已有研究表明，当来源属性是物品的内在属性(例如，物体的表面颜色)时，熟悉性有助于知觉来源监控，但很少有研究考察其对识别外部来源联系的贡献。在三个涉及对常见物体的图片的记忆判断的实验中，考察了外部来源联系。在实验1中，来源信息是空间的，结果表明熟悉性有助于准确的来源识别：FN400事件相关电位成分表现出来源准确性效应，当被判断为只感觉熟悉的项目时，来源准确性高于机会。实验2中的来源信息是外在颜色联系；来源准确性对熟悉的项目是偶然的，FN400在正确和不正确的来源判断之间没有差异。实验3在受试者内部对空间和颜色源进行操作，重复了实验结果。总体而言，结果表明，熟悉度对外部来源监控的贡献取决于被记忆的来源信息的类型。
Familiarity and recollection are thought to be separate processes underlying recognition memory. Event-related potentials (ERPs) dissociate these processes, with an early (approximately 300–500 ms) frontal effect relating to familiarity (the FN400) and a later (500–800 ms) parietal old/new effect relating to recollection. It has been debated whether source information for a studied item (i.e., contextual associations from when the item was previously encountered) is only accessible through recollection, or whether familiarity can contribute to successful source recognition. It has been shown that familiarity can assist in perceptual source monitoring when the source attribute is an intrinsic property of the item (e.g., an object’s surface color), but few studies have examined its contribution to recognizing extrinsic source associations. Extrinsic source associations were examined in three experiments involving memory judgments for pictures of common objects. In Experiment 1, source information was spatial and results suggested that familiarity contributed to accurate source recognition: the FN400 ERP component showed a source accuracy effect, and source accuracy was above chance for items judged to only feel familiar. Source information in Experiment 2 was an extrinsic color association; source accuracy was at chance for familiar items and the FN400 did not differ between correct and incorrect source judgments. Experiment 3 replicated the results using a within-subjects manipulation of spatial vs. color source. Overall, the results suggest that familiarity’s contribution to extrinsic source monitoring depends on the type of source information being remembered.
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影响因子：
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作者：
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通讯作者：
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