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Contribution Details
| Type | Journal Article |
| Scope | Discipline-based scholarship |
| Title | Learning and generalization under ambiguity: An fMRI Study |
| Organization Unit | |
| Authors |
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| Item Subtype | Original Work |
| Refereed | Yes |
| Status | Published in final form |
| Language |
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| Journal Title | PLoS Computational Biology |
| Publisher | Public Library of Science (PLoS) |
| Geographical Reach | international |
| ISSN | 1553-734X |
| Volume | 8 |
| Number | 1 |
| Page Range | e1002346 |
| Date | 2011 |
| Abstract Text | Adaptive behavior often exploits generalizations from past experience by applying them judiciously in new situations. This requires a means of quantifying the relative importance of prior experience and current information, so they can be balanced optimally. In this study, we ask whether the brain generalizes in an optimal way. Specifically, we used Bayesian learning theory and fMRI to test whether neuronal responses reflect context-sensitive changes in ambiguity or uncertainty about experience-dependent beliefs. We found that the hippocampus expresses clear ambiguity-dependent responses that are associated with an augmented rate of learning. These findings suggest candidate neuronal systems that may be involved in aberrations of generalization, such as over-confidence. |
| Free access at | PubMed ID |
| Digital Object Identifier | 10.1371/journal.pcbi.1002346 |
| PubMed ID | 22275857 |
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