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Activation and inhibition of posterior parietal cortex have bi-directional effects on spatial errors following interruptions

Interruptions to ongoing mental activities are omnipresent in our modern digital world, but the brain networks involved in interrupted performance are not known, nor have the activation of those networks been modulated. Errors following interruptions reflect failures in spatial memory, whose mainten...

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Detalles Bibliográficos
Autores principales: Foroughi, Cyrus K., Blumberg, Eric J., Parasuraman, Raja
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4290581/
https://www.ncbi.nlm.nih.gov/pubmed/25628543
http://dx.doi.org/10.3389/fnsys.2014.00245
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author Foroughi, Cyrus K.
Blumberg, Eric J.
Parasuraman, Raja
author_facet Foroughi, Cyrus K.
Blumberg, Eric J.
Parasuraman, Raja
author_sort Foroughi, Cyrus K.
collection PubMed
description Interruptions to ongoing mental activities are omnipresent in our modern digital world, but the brain networks involved in interrupted performance are not known, nor have the activation of those networks been modulated. Errors following interruptions reflect failures in spatial memory, whose maintenance is supported by a brain network including the right posterior parietal cortex (PPC). The present study therefore used bi-directional transcranial Direct Current Stimulation (tDCS) of right PPC to examine the neuromodulation of spatial errors following interruptions, as well as performance on another PPC-dependent task, mental rotation. Anodal stimulation significantly reduced the number of interruption-based errors and increased mental rotation accuracy whereas cathodal stimulation significantly increased errors and reduced mental rotation accuracy. The results provide evidence for a causal role of the PPC in the maintenance of spatial representations during interrupted task performance.
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spelling pubmed-42905812015-01-27 Activation and inhibition of posterior parietal cortex have bi-directional effects on spatial errors following interruptions Foroughi, Cyrus K. Blumberg, Eric J. Parasuraman, Raja Front Syst Neurosci Neuroscience Interruptions to ongoing mental activities are omnipresent in our modern digital world, but the brain networks involved in interrupted performance are not known, nor have the activation of those networks been modulated. Errors following interruptions reflect failures in spatial memory, whose maintenance is supported by a brain network including the right posterior parietal cortex (PPC). The present study therefore used bi-directional transcranial Direct Current Stimulation (tDCS) of right PPC to examine the neuromodulation of spatial errors following interruptions, as well as performance on another PPC-dependent task, mental rotation. Anodal stimulation significantly reduced the number of interruption-based errors and increased mental rotation accuracy whereas cathodal stimulation significantly increased errors and reduced mental rotation accuracy. The results provide evidence for a causal role of the PPC in the maintenance of spatial representations during interrupted task performance. Frontiers Media S.A. 2015-01-12 /pmc/articles/PMC4290581/ /pubmed/25628543 http://dx.doi.org/10.3389/fnsys.2014.00245 Text en Copyright © 2015 Foroughi, Blumberg and Parasuraman. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution and reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Foroughi, Cyrus K.
Blumberg, Eric J.
Parasuraman, Raja
Activation and inhibition of posterior parietal cortex have bi-directional effects on spatial errors following interruptions
title Activation and inhibition of posterior parietal cortex have bi-directional effects on spatial errors following interruptions
title_full Activation and inhibition of posterior parietal cortex have bi-directional effects on spatial errors following interruptions
title_fullStr Activation and inhibition of posterior parietal cortex have bi-directional effects on spatial errors following interruptions
title_full_unstemmed Activation and inhibition of posterior parietal cortex have bi-directional effects on spatial errors following interruptions
title_short Activation and inhibition of posterior parietal cortex have bi-directional effects on spatial errors following interruptions
title_sort activation and inhibition of posterior parietal cortex have bi-directional effects on spatial errors following interruptions
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4290581/
https://www.ncbi.nlm.nih.gov/pubmed/25628543
http://dx.doi.org/10.3389/fnsys.2014.00245
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