NEURAL CORRELATES OF ENCODING IN AN INCIDENTAL-LEARNING PARADIGM
NEURAL CORRELATES OF ENCODING IN AN INCIDENTAL-LEARNING PARADIGM
复制标题
DOI：
10.1016/0013-4694(87)90124-6
复制
发表时间：
1987-10-01
期刊：
影响因子：
--
通讯作者：
MAYES, AR
中科院分区：
文献类型：
--
作者：
PALLER, KA;KUTAS, M;MAYES, AR
在一个偶然的学习范式中记录事件相关脑电位（ERPs）。回忆和识别对于最初在需要语义决策的任务中呈现的单词更好（即，“它还活着吗？"还是“它能吃吗？“）比在需要非语义决策的任务中的单词。在这些任务的执行过程中引起的ERPs预测随后的记忆表现。由后来回忆或认识的单词引起的晚期积极ERP大于由后来忘记的单词引起的ERP。这种增强的积极性，要记住的话可以解释，部分原因是，在语义任务的话更好地记住，并引起更大的ERPs比在非语义任务的话。同样，单词后接肯定而不是否定的决定与更好的识别和更大的ERP相关。然而，ERPs敏感的过程，影响后来的记忆表现，即使在一个单独的语义任务和肯定的决定条件。此外，结果表明，ERP差异的基础上，后来的记忆表现并不一定是由于振幅的变化，在P3波发生在同一时间。
Event-related brain potentials (ERPs) were recorded during an incidental learning paradigm. Recall and recognition were better for words initially presented in tasks requiring semantic decisions (i.e., ''is it living?'' or ''is it edible?'') than for words in tasks requiring non-semantic decisions. ERPs elicited during performance of these tasks were predictive of subsequent memory performance. A late positive ERP elicited by words later recalled or recognized was larger than that elicited by words later forgotten. This enhanced positivity for to-be-remembered words could be accounted for, in part, by the fact that words in semantic tasks were remembered better and elicited larger ERPs than did words in non-semantic tasks. Similarly, words followed by affirmative rather than negative decisions were associated both with better recognition and with larger ERPs. However, ERPs were sensitive to processes that influenced later memory performance even within an individual semantic task and within the affirmative decision condition. In addition, results showed that the ERP differences based on later memory performance did not necessarily arise from amplitude variation in P3 waves that occurred at the same time.