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Learning and Generalization under Ambiguity: An fMRI Study
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 g...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3262009/ https://www.ncbi.nlm.nih.gov/pubmed/22275857 http://dx.doi.org/10.1371/journal.pcbi.1002346 |
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author | Chumbley, J. R. Flandin, G. Bach, D. R. Daunizeau, J. Fehr, E. Dolan, R. J. Friston, K. J. |
author_facet | Chumbley, J. R. Flandin, G. Bach, D. R. Daunizeau, J. Fehr, E. Dolan, R. J. Friston, K. J. |
author_sort | Chumbley, J. R. |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-3262009 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-32620092012-01-24 Learning and Generalization under Ambiguity: An fMRI Study Chumbley, J. R. Flandin, G. Bach, D. R. Daunizeau, J. Fehr, E. Dolan, R. J. Friston, K. J. PLoS Comput Biol Research Article 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. Public Library of Science 2012-01-19 /pmc/articles/PMC3262009/ /pubmed/22275857 http://dx.doi.org/10.1371/journal.pcbi.1002346 Text en Chumbley et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Chumbley, J. R. Flandin, G. Bach, D. R. Daunizeau, J. Fehr, E. Dolan, R. J. Friston, K. J. Learning and Generalization under Ambiguity: An fMRI Study |
title | Learning and Generalization under Ambiguity: An fMRI Study |
title_full | Learning and Generalization under Ambiguity: An fMRI Study |
title_fullStr | Learning and Generalization under Ambiguity: An fMRI Study |
title_full_unstemmed | Learning and Generalization under Ambiguity: An fMRI Study |
title_short | Learning and Generalization under Ambiguity: An fMRI Study |
title_sort | learning and generalization under ambiguity: an fmri study |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3262009/ https://www.ncbi.nlm.nih.gov/pubmed/22275857 http://dx.doi.org/10.1371/journal.pcbi.1002346 |
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