Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation Study

Available online 17 May 2019

Detalhes bibliográficos
Autores: Bourbon-Teles, José, Soto, David
Formato: artículo
Fecha de publicación:2019
País:España
Recursos:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/34627
Acesso em linha:http://hdl.handle.net/10810/34627
Access Level:acceso abierto
Palavra-chave:working memory
attention
vision
tDCS
frontal
search
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spelling Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation StudyBourbon-Teles, JoséSoto, Davidworking memoryattentionvisiontDCSfrontalsearchAvailable online 17 May 2019Perceptual selection can be guided by the contents of working memory (WM). Neuroimaging and neuropsychological data point to a role of a fronto-parietal and fronto-thalamic networks in WM guidance. Here we assessed the effect of transcranial direct current stimulation of the left dorsal frontal cortex (lDFC) in a combined WM/attention paradigm. We asked the extent to which the lDFC is implicated in mnemonic and selective attention functions during WM guidance of behavior. Observers were asked to keep information in memory while searching for a visual target, while the validity of WM contents for the search task varied. We tested the effects of lDFC-tDCS on the strength of WM guidance of search, whether any tDCS effect is dependent on the amount of WM load, and whether lDFC-tDCS primarily influences how WM contents are retained, the process of selective attention in search task, or both. Consistent with prior behavioral findings, we found that (i) selection of items that matched the contents of WM was facilitated relative to non-matching items and (ii) this WM guidance effect was reduced when the level processing/cognitive load in WM was higher. Notably, across two experiments we found that lDFC-tDCS modulated WM guidance of visual selection in the context of high processing loads in WM. No effects of tDCS were observed in WM accuracy. These findings suggest that the role of the left dorsal frontal cortex in WM guidance is associated with selective attentional control rather than mnemonic processing.J.B-T. was supported by a grant from the Bial Foundation. D. S. acknowledges support from the Spanish Ministry of Economy and Competitiveness (MINECO), through the ‘Severo Ochoa’ Programme for Centres/Units of Excellence in R&D (SEV-2015-490) and project grants PSI2016-76443-P from MINECO and PI-2017-25 from the Basque GovernmentNeuroscience201920192019info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/34627reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MINECO/SEV-2015-0490/info:eu-repo/grantAgreement/MINECO/PSI2016-76443-P/https://www.sciencedirect.com/journal/neuroscienceinfo:eu-repo/semantics/openAccess© 2019 IBRO. Published by Elsevier Ltd. All rights reserved.oai:addi.ehu.eus:10810/346272026-06-18T09:23:17Z
dc.title.none.fl_str_mv Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation Study
title Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation Study
spellingShingle Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation Study
Bourbon-Teles, José
working memory
attention
vision
tDCS
frontal
search
title_short Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation Study
title_full Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation Study
title_fullStr Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation Study
title_full_unstemmed Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation Study
title_sort Assessing the Role of the Left Dorsal Frontal Cortex in Working Memory Guidance: Attentional or Mnemonic? A Neurostimulation Study
dc.creator.none.fl_str_mv Bourbon-Teles, José
Soto, David
author Bourbon-Teles, José
author_facet Bourbon-Teles, José
Soto, David
author_role author
author2 Soto, David
author2_role author
dc.subject.none.fl_str_mv working memory
attention
vision
tDCS
frontal
search
topic working memory
attention
vision
tDCS
frontal
search
description Available online 17 May 2019
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/34627
url http://hdl.handle.net/10810/34627
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO/SEV-2015-0490/
info:eu-repo/grantAgreement/MINECO/PSI2016-76443-P/
https://www.sciencedirect.com/journal/neuroscience
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
© 2019 IBRO. Published by Elsevier Ltd. All rights reserved.
eu_rights_str_mv openAccess
rights_invalid_str_mv © 2019 IBRO. Published by Elsevier Ltd. All rights reserved.
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Neuroscience
publisher.none.fl_str_mv Neuroscience
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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