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Updating working memory in aircraft noise and speech noise causes different fMRI activations
The present study used fMRI/BOLD neuroimaging to investigate how visual-verbal working memory is updated when exposed to three different background-noise conditions: speech noise, aircraft noise and silence. The number-updating task that was used can distinguish between “substitution processes,” whi...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BlackWell Publishing Ltd
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4303944/ https://www.ncbi.nlm.nih.gov/pubmed/25352319 http://dx.doi.org/10.1111/sjop.12171 |
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author | Sætrevik, Bjørn Sörqvist, Patrik |
author_facet | Sætrevik, Bjørn Sörqvist, Patrik |
author_sort | Sætrevik, Bjørn |
collection | PubMed |
description | The present study used fMRI/BOLD neuroimaging to investigate how visual-verbal working memory is updated when exposed to three different background-noise conditions: speech noise, aircraft noise and silence. The number-updating task that was used can distinguish between “substitution processes,” which involve adding new items to the working memory representation and suppressing old items, and “exclusion processes,” which involve rejecting new items and maintaining an intact memory set. The current findings supported the findings of a previous study by showing that substitution activated the dorsolateral prefrontal cortex, the posterior medial frontal cortex and the parietal lobes, whereas exclusion activated the anterior medial frontal cortex. Moreover, the prefrontal cortex was activated more by substitution processes when exposed to background speech than when exposed to aircraft noise. These results indicate that (a) the prefrontal cortex plays a special role when task-irrelevant materials should be denied access to working memory and (b) that, when compensating for different types of noise, either different cognitive mechanisms are involved or those cognitive mechanisms that are involved are involved to different degrees. |
format | Online Article Text |
id | pubmed-4303944 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | BlackWell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-43039442015-02-02 Updating working memory in aircraft noise and speech noise causes different fMRI activations Sætrevik, Bjørn Sörqvist, Patrik Scand J Psychol Cognition and Neurosciences The present study used fMRI/BOLD neuroimaging to investigate how visual-verbal working memory is updated when exposed to three different background-noise conditions: speech noise, aircraft noise and silence. The number-updating task that was used can distinguish between “substitution processes,” which involve adding new items to the working memory representation and suppressing old items, and “exclusion processes,” which involve rejecting new items and maintaining an intact memory set. The current findings supported the findings of a previous study by showing that substitution activated the dorsolateral prefrontal cortex, the posterior medial frontal cortex and the parietal lobes, whereas exclusion activated the anterior medial frontal cortex. Moreover, the prefrontal cortex was activated more by substitution processes when exposed to background speech than when exposed to aircraft noise. These results indicate that (a) the prefrontal cortex plays a special role when task-irrelevant materials should be denied access to working memory and (b) that, when compensating for different types of noise, either different cognitive mechanisms are involved or those cognitive mechanisms that are involved are involved to different degrees. BlackWell Publishing Ltd 2015-02 2014-10-28 /pmc/articles/PMC4303944/ /pubmed/25352319 http://dx.doi.org/10.1111/sjop.12171 Text en © 2014 The Authors. Scandinavian Journal of Psychology published by Scandinavian Psychological Associations and John Wiley & Sons Ltd. http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
spellingShingle | Cognition and Neurosciences Sætrevik, Bjørn Sörqvist, Patrik Updating working memory in aircraft noise and speech noise causes different fMRI activations |
title | Updating working memory in aircraft noise and speech noise causes different fMRI activations |
title_full | Updating working memory in aircraft noise and speech noise causes different fMRI activations |
title_fullStr | Updating working memory in aircraft noise and speech noise causes different fMRI activations |
title_full_unstemmed | Updating working memory in aircraft noise and speech noise causes different fMRI activations |
title_short | Updating working memory in aircraft noise and speech noise causes different fMRI activations |
title_sort | updating working memory in aircraft noise and speech noise causes different fmri activations |
topic | Cognition and Neurosciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4303944/ https://www.ncbi.nlm.nih.gov/pubmed/25352319 http://dx.doi.org/10.1111/sjop.12171 |
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