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Auditory Discrimination Learning: Role of Working Memory
Perceptual training is generally assumed to improve perception by modifying the encoding or decoding of sensory information. However, this assumption is incompatible with recent demonstrations that transfer of learning can be enhanced by across-trial variation of training stimuli or task. Here we pr...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4723131/ https://www.ncbi.nlm.nih.gov/pubmed/26799068 http://dx.doi.org/10.1371/journal.pone.0147320 |
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author | Zhang, Yu-Xuan Moore, David R. Guiraud, Jeanne Molloy, Katharine Yan, Ting-Ting Amitay, Sygal |
author_facet | Zhang, Yu-Xuan Moore, David R. Guiraud, Jeanne Molloy, Katharine Yan, Ting-Ting Amitay, Sygal |
author_sort | Zhang, Yu-Xuan |
collection | PubMed |
description | Perceptual training is generally assumed to improve perception by modifying the encoding or decoding of sensory information. However, this assumption is incompatible with recent demonstrations that transfer of learning can be enhanced by across-trial variation of training stimuli or task. Here we present three lines of evidence from healthy adults in support of the idea that the enhanced transfer of auditory discrimination learning is mediated by working memory (WM). First, the ability to discriminate small differences in tone frequency or duration was correlated with WM measured with a tone n-back task. Second, training frequency discrimination around a variable frequency transferred to and from WM learning, but training around a fixed frequency did not. The transfer of learning in both directions was correlated with a reduction of the influence of stimulus variation in the discrimination task, linking WM and its improvement to across-trial stimulus interaction in auditory discrimination. Third, while WM training transferred broadly to other WM and auditory discrimination tasks, variable-frequency training on duration discrimination did not improve WM, indicating that stimulus variation challenges and trains WM only if the task demands stimulus updating in the varied dimension. The results provide empirical evidence as well as a theoretic framework for interactions between cognitive and sensory plasticity during perceptual experience. |
format | Online Article Text |
id | pubmed-4723131 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-47231312016-01-30 Auditory Discrimination Learning: Role of Working Memory Zhang, Yu-Xuan Moore, David R. Guiraud, Jeanne Molloy, Katharine Yan, Ting-Ting Amitay, Sygal PLoS One Research Article Perceptual training is generally assumed to improve perception by modifying the encoding or decoding of sensory information. However, this assumption is incompatible with recent demonstrations that transfer of learning can be enhanced by across-trial variation of training stimuli or task. Here we present three lines of evidence from healthy adults in support of the idea that the enhanced transfer of auditory discrimination learning is mediated by working memory (WM). First, the ability to discriminate small differences in tone frequency or duration was correlated with WM measured with a tone n-back task. Second, training frequency discrimination around a variable frequency transferred to and from WM learning, but training around a fixed frequency did not. The transfer of learning in both directions was correlated with a reduction of the influence of stimulus variation in the discrimination task, linking WM and its improvement to across-trial stimulus interaction in auditory discrimination. Third, while WM training transferred broadly to other WM and auditory discrimination tasks, variable-frequency training on duration discrimination did not improve WM, indicating that stimulus variation challenges and trains WM only if the task demands stimulus updating in the varied dimension. The results provide empirical evidence as well as a theoretic framework for interactions between cognitive and sensory plasticity during perceptual experience. Public Library of Science 2016-01-22 /pmc/articles/PMC4723131/ /pubmed/26799068 http://dx.doi.org/10.1371/journal.pone.0147320 Text en © 2016 Zhang 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 (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Zhang, Yu-Xuan Moore, David R. Guiraud, Jeanne Molloy, Katharine Yan, Ting-Ting Amitay, Sygal Auditory Discrimination Learning: Role of Working Memory |
title | Auditory Discrimination Learning: Role of Working Memory |
title_full | Auditory Discrimination Learning: Role of Working Memory |
title_fullStr | Auditory Discrimination Learning: Role of Working Memory |
title_full_unstemmed | Auditory Discrimination Learning: Role of Working Memory |
title_short | Auditory Discrimination Learning: Role of Working Memory |
title_sort | auditory discrimination learning: role of working memory |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4723131/ https://www.ncbi.nlm.nih.gov/pubmed/26799068 http://dx.doi.org/10.1371/journal.pone.0147320 |
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