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Neural activations associated with feedback and retrieval success
Carola Wiklund-Hörnqvist1,2, Micael Andersson2,3, Bert Jonsson1,2
11Department of Psychology, Umeå University, Umeå, Sweden.
NPJ Science of Learning
|January 12, 2019
Summary
Repeated testing enhances memory more than re-studying. Brain scans show fronto-striatal activity decreases as learning improves, suggesting feedback-guided memory updating underlies the testing effect.
Area of Science:
- Cognitive Neuroscience
- Neuroimaging
- Educational Psychology
Background:
- The testing effect demonstrates superior memory recall after retrieval practice compared to re-study.
- Neuro-cognitive mechanisms driving the testing effect, particularly during initial learning phases, remain underexplored.
Purpose of the Study:
- To investigate the neural correlates of test-enhanced learning with feedback.
- To examine functional brain activity associated with retrieval and feedback events during vocabulary acquisition.
Main Methods:
- Functional magnetic resonance imaging (fMRI) was used to monitor brain activity.
- Participants underwent three learning cycles involving foreign vocabulary testing with corrective feedback.
- Brain activity was analyzed in relation to successful retrieval and feedback presentation.
Main Results:
- Initial successful retrieval showed increased activity in fronto-striatal regions.
- Brain activity in these regions decreased with subsequent learning, correlating with improved performance.
- Feedback enhanced behavioral performance across tests but had minimal impact on brain activity after initial retrieval.
Conclusions:
- Test-enhanced learning may be driven by feedback-induced updating of memory representations.
- Striatal involvement is suggested in stabilizing memory, contributing to the observed testing effect.
- Neural activity patterns reflect learning consolidation processes influenced by retrieval and feedback.
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