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Updating working memory in aircraft noise and speech noise causes different fMRI activations
Department of Psychosocial Science, University of Bergen, Bergen, Norway.
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Miljöpsykologi. Linnaeus Centre HEAD, Swedish Institute for Disability Research, Linköping University, Linköping, Sweden. (Miljöpsykologi)ORCID-id: 0000-0002-7584-2275
2015 (engelsk)Inngår i: Scandinavian Journal of Psychology, ISSN 0036-5564, E-ISSN 1467-9450, Vol. 56, nr 1, s. 1-10Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2015. Vol. 56, nr 1, s. 1-10
Emneord [en]
Executive functions;updating;substitution;cognitive conflict;cognitive control;noise;frontal-parietal network; fMRI
HSV kategori
Identifikatorer
URN: urn:nbn:se:hig:diva-17326DOI: 10.1111/sjop.12171ISI: 000348444200001PubMedID: 25352319Scopus ID: 2-s2.0-84920972949OAI: oai:DiVA.org:hig-17326DiVA, id: diva2:736731
Tilgjengelig fra: 2014-08-08 Laget: 2014-08-08 Sist oppdatert: 2018-03-13bibliografisk kontrollert

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