Rewiring the brain with repeated retrieval: A parametric fMRI study of the testing effect
Rewiring the brain with repeated retrieval: A parametric fMRI study of the testing effect
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DOI：
10.1016/j.neulet.2011.08.061
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发表时间：
2011-11-07
影响因子：
2.5
通讯作者：
Nyberg, Lars
中科院分区：
文献类型：
--
作者：
Eriksson, Johan;Kalpouzos, Gregoria;Nyberg, Lars
“测试效应”是指测试对记忆表现的有益影响，这种现象在教育环境中具有潜在的重大影响。虽然这种效应本身在之前的研究中已得到证实，但人们对相关的大脑变化知之甚少。在这里，我们使用功能磁共振成像和参数设计来表明，在记忆获取阶段重复成功检索会导致后续测试阶段前扣带皮层 (ACC) 的大脑活动更高。 ACC 活动增加的程度与 5 个月后个体的记忆表现相关。最近的研究将 ACC 与记忆巩固过程联系起来，目前的结果表明，测试效果可能通过增强记忆表征的巩固而在系统层面发挥作用。 (C) 2011 Elsevier Ireland Ltd. 保留所有权利。
The "testing effect" refers to the beneficial effects on memory performance from being tested, a phenomenon of potentially substantial implications in educational settings. While the effect itself is firmly established in previous research, little is known of related brain changes. Here we used fMRI and a parametric design to show that repeated successful retrieval during a memory acquisition phase leads to higher brain activity in the anterior cingulate cortex (ACC) at a subsequent test phase. The extent of ACC activity increase correlated across individuals with memory performance 5 months later. In relation to recent research that associates the ACC with memory consolidation processes, the present results suggest that the testing effect may operate at the systems level by enhancing consolidation of memory representations. (C) 2011 Elsevier Ireland Ltd. All rights reserved.