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Resource allocation and prioritization in auditory working memory

A prevalent view of working memory (WM) considers it to be capacity-limited, fixed to a set number of items. However, recent shared resource models of WM have challenged this “quantized” account using measures of recall precision. Although this conceptual framework can account for several features o...

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Detalles Bibliográficos
Autores principales: Kumar, S., Joseph, S., Pearson, B., Teki, S., Fox, Z. V., Griffiths, T. D., Husain, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Taylor & Francis 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3590753/
https://www.ncbi.nlm.nih.gov/pubmed/23486527
http://dx.doi.org/10.1080/17588928.2012.716416
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author Kumar, S.
Joseph, S.
Pearson, B.
Teki, S.
Fox, Z. V.
Griffiths, T. D.
Husain, M.
author_facet Kumar, S.
Joseph, S.
Pearson, B.
Teki, S.
Fox, Z. V.
Griffiths, T. D.
Husain, M.
author_sort Kumar, S.
collection PubMed
description A prevalent view of working memory (WM) considers it to be capacity-limited, fixed to a set number of items. However, recent shared resource models of WM have challenged this “quantized” account using measures of recall precision. Although this conceptual framework can account for several features of visual WM, it remains to be established whether it also applies to auditory WM. We used a novel pitch-matching paradigm to probe participants’ memory of pure tones in sequences of varying length, and measured their precision of recall. Crucially, this provides an index of the variability of memory representation around its true value, rather than a binary “yes/no” recall measure typically used in change detection paradigms. We show that precision of auditory WM varies with both memory load and serial order. Moreover, auditory WM resources can be prioritized to cued items, improving precision of recall, but with a concomitant cost to other items, consistent with a resource model account.
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spelling pubmed-35907532013-03-11 Resource allocation and prioritization in auditory working memory Kumar, S. Joseph, S. Pearson, B. Teki, S. Fox, Z. V. Griffiths, T. D. Husain, M. Cogn Neurosci Research Article A prevalent view of working memory (WM) considers it to be capacity-limited, fixed to a set number of items. However, recent shared resource models of WM have challenged this “quantized” account using measures of recall precision. Although this conceptual framework can account for several features of visual WM, it remains to be established whether it also applies to auditory WM. We used a novel pitch-matching paradigm to probe participants’ memory of pure tones in sequences of varying length, and measured their precision of recall. Crucially, this provides an index of the variability of memory representation around its true value, rather than a binary “yes/no” recall measure typically used in change detection paradigms. We show that precision of auditory WM varies with both memory load and serial order. Moreover, auditory WM resources can be prioritized to cued items, improving precision of recall, but with a concomitant cost to other items, consistent with a resource model account. Taylor & Francis 2012-08-21 2013-03 /pmc/articles/PMC3590753/ /pubmed/23486527 http://dx.doi.org/10.1080/17588928.2012.716416 Text en © 2013 Taylor & Francis http://www.informaworld.com/mpp/uploads/iopenaccess_tcs.pdf This is an open access article distributed under the Supplemental Terms and Conditions for iOpenAccess articles published in Taylor & Francis journals (http://www.informaworld.com/mpp/uploads/iopenaccess_tcs.pdf) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Kumar, S.
Joseph, S.
Pearson, B.
Teki, S.
Fox, Z. V.
Griffiths, T. D.
Husain, M.
Resource allocation and prioritization in auditory working memory
title Resource allocation and prioritization in auditory working memory
title_full Resource allocation and prioritization in auditory working memory
title_fullStr Resource allocation and prioritization in auditory working memory
title_full_unstemmed Resource allocation and prioritization in auditory working memory
title_short Resource allocation and prioritization in auditory working memory
title_sort resource allocation and prioritization in auditory working memory
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3590753/
https://www.ncbi.nlm.nih.gov/pubmed/23486527
http://dx.doi.org/10.1080/17588928.2012.716416
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