Journal
BRAIN AND BEHAVIOR
Volume 11, Issue 1, Pages -Publisher
WILEY
DOI: 10.1002/brb3.1909
Keywords
hippocampus; learning and memory; retrieval practice; the testing effect
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Funding
- Umea School of Education
- Swedish Research Council [2014-2099, 2016-07213]
- Swedish National Infrastructure for Computing [HPC2N]
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The study found that retrieval practice can strengthen subsequent retention through dual action in the anterior and posterior hippocampus, possibly reflecting the coding of individual experiences as well as integration and generalization across multiple experiences.
Introduction and Methods A large number of behavioral studies show that retrieval practice is a powerful way of strengthening learning of new information. Repeated retrieval might support long-term retention in a quantitative sense by inducing stronger episodic representations or in a qualitative sense by contributing to the formation of more gist-like representations. Here we used fMRI to examine the brain bases related to the learning effects following retrieval practice and provide imaging support for both views by showing increased activation of anterior and posterior hippocampus regions during a delayed memory test. Results Brain activity in the posterior hippocampus increased linearly as a function of number of successful retrievals during initial learning, whereas anterior hippocampus activity was restricted to items retrieved many but not few times during the learning phase. Conclusion Taken together, these findings indicate that retrieval practice strengthens subsequent retention via dual action in the anterior and posterior hippocampus, possibly reflecting coding of individual experiences as well as integration and generalization across multiple experiences. Our findings are of educational significance by providing insight into the brain bases of a learning method of applied relevance.
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