ERP correlates of source memory: unitized source information increases familiarity-based retrieval.
ERP correlates of source memory: unitized source information increases familiarity-based retrieval.
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DOI：
10.1016/j.brainres.2010.10.030
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发表时间：
2011-01-07
期刊：
影响因子：
2.9
通讯作者：
Ranganath C
中科院分区：
文献类型：
--
作者：
Diana RA;Van den Boom W;Yonelinas AP;Ranganath C
来源记忆测试通常要求受试者对项目编码的上下文做出决定，并被认为取决于对研究事件细节的回忆。虽然人们普遍认为熟悉性对源记忆没有贡献，但最近的行为研究表明，当项目和源信息在学习过程中被整合或“组合”时，熟悉性也可能支持源识别。然而，对这些行为研究结果的另一种解释是，单元化影响了回忆有助于表现的方式，而不是增加基于熟悉度的来源记忆。为了区分这些可能性，我们进行了一项事件相关电位（ERP）研究，测试假设单位化增加了熟悉性对源识别的贡献。参与者研究了单词和背景颜色之间的关联，使用鼓励或不鼓励单位化的任务。在背景颜色的源记忆测试期间记录ERP。结果揭示了两个不同的神经相关的源识别：一个正面分布的积极性，这是与熟悉为基础的源记忆在高unitization条件下，只有和一个parietally-distributed积极性，这是与回忆为基础的源记忆在高unitization和低unitization条件。ERP和行为研究结果为熟悉度有助于源识别的观点提供了一致的证据，特别是当源信息被编码为项目细节时。
Source memory tests typically require subjects to make decisions about the context in which an item was encoded and are thought to depend on recollection of details from the study episode. Although it is generally believed that familiarity does not contribute to source memory, recent behavioral studies have suggested that familiarity may also support source recognition when item and source information are integrated, or “unitized”, during study. However, an alternative explanation of these behavioral findings is that unitization affects the manner in which recollection contributes to performance, rather than increasing familiarity-based source memory. To discriminate between these possibilities, we conducted an event-related potential (ERP) study testing the hypothesis that unitization increases the contribution of familiarity to source recognition. Participants studied associations between words and background colors using tasks that either encouraged or discouraged unitization. ERPs were recorded during a source memory test for background color. The results revealed two distinct neural correlates of source recognition: a frontally-distributed positivity that was associated with familiarity-based source memory in the high unitization condition only and a parietally-distributed positivity that was associated with recollection-based source memory in both the high unitization and low unitization conditions. The ERP and behavioral findings provide converging evidence for the idea that familiarity can contribute to source recognition, particularly when source information is encoded as an item detail.
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影响因子：
2.9
作者：
Tu HW;Alty EE;Diana RA
通讯作者：
Diana RA
影响因子：
5.7
作者：
Bader, Regine;Mecklinger, Axel;Meyer, Patric
通讯作者：
Meyer, Patric
影响因子：
3.5
作者：
Diana, RA;Reder, LM;Park, H
通讯作者：
Park, H
影响因子：
5.4
作者：
MANDLER, G
通讯作者：
MANDLER, G
DOI：
10.1037/0278-7393.34.4.730
发表时间：
2008-07
期刊：
Journal of experimental psychology. Learning, memory, and cognition
影响因子：
--
作者：
Diana RA;Yonelinas AP;Ranganath C
通讯作者：
Ranganath C