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Reconfiguration of the Brain Functional Network Associated with Visual Task Demands

Neuroimaging studies have demonstrated that the topological properties of resting-state brain functional networks are modulated through task performances. However, the reconfiguration of functional networks associated with distinct degrees of task demands is not well understood. In the present study...

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Autores principales: Wen, Xue, Zhang, Delong, Liang, Bishan, Zhang, Ruibin, Wang, Zengjian, Wang, Junjing, Liu, Ming, Huang, Ruiwang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4493060/
https://www.ncbi.nlm.nih.gov/pubmed/26146993
http://dx.doi.org/10.1371/journal.pone.0132518
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author Wen, Xue
Zhang, Delong
Liang, Bishan
Zhang, Ruibin
Wang, Zengjian
Wang, Junjing
Liu, Ming
Huang, Ruiwang
author_facet Wen, Xue
Zhang, Delong
Liang, Bishan
Zhang, Ruibin
Wang, Zengjian
Wang, Junjing
Liu, Ming
Huang, Ruiwang
author_sort Wen, Xue
collection PubMed
description Neuroimaging studies have demonstrated that the topological properties of resting-state brain functional networks are modulated through task performances. However, the reconfiguration of functional networks associated with distinct degrees of task demands is not well understood. In the present study, we acquired fMRI data from 18 healthy adult volunteers during resting-state (RS) and two visual tasks (i.e., visual stimulus watching, VSW; and visual stimulus decision, VSD). Subsequently, we constructed the functional brain networks associated with these three conditions and analyzed the changes in the topological properties (e.g., network efficiency, wiring-cost, modularity, and robustness) among them. Although the small-world attributes were preserved qualitatively across the functional networks of the three conditions, changes in the topological properties were also observed. Compared with the resting-state, the functional networks associated with the visual tasks exhibited significantly increased network efficiency and wiring-cost, but decreased modularity and network robustness. The changes in the task-related topological properties were modulated according to the task complexity (i.e., from RS to VSW and VSD). Moreover, at the regional level, we observed that the increased nodal efficiencies in the visual and working memory regions were positively associated with the increase in task complexity. Together, these results suggest that the increased efficiency of the functional brain network and higher wiring-cost were observed to afford the demands of visual tasks. These observations provide further insights into the mechanisms underlying the reconfiguration of the brain network during task performance.
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spelling pubmed-44930602015-07-15 Reconfiguration of the Brain Functional Network Associated with Visual Task Demands Wen, Xue Zhang, Delong Liang, Bishan Zhang, Ruibin Wang, Zengjian Wang, Junjing Liu, Ming Huang, Ruiwang PLoS One Research Article Neuroimaging studies have demonstrated that the topological properties of resting-state brain functional networks are modulated through task performances. However, the reconfiguration of functional networks associated with distinct degrees of task demands is not well understood. In the present study, we acquired fMRI data from 18 healthy adult volunteers during resting-state (RS) and two visual tasks (i.e., visual stimulus watching, VSW; and visual stimulus decision, VSD). Subsequently, we constructed the functional brain networks associated with these three conditions and analyzed the changes in the topological properties (e.g., network efficiency, wiring-cost, modularity, and robustness) among them. Although the small-world attributes were preserved qualitatively across the functional networks of the three conditions, changes in the topological properties were also observed. Compared with the resting-state, the functional networks associated with the visual tasks exhibited significantly increased network efficiency and wiring-cost, but decreased modularity and network robustness. The changes in the task-related topological properties were modulated according to the task complexity (i.e., from RS to VSW and VSD). Moreover, at the regional level, we observed that the increased nodal efficiencies in the visual and working memory regions were positively associated with the increase in task complexity. Together, these results suggest that the increased efficiency of the functional brain network and higher wiring-cost were observed to afford the demands of visual tasks. These observations provide further insights into the mechanisms underlying the reconfiguration of the brain network during task performance. Public Library of Science 2015-07-06 /pmc/articles/PMC4493060/ /pubmed/26146993 http://dx.doi.org/10.1371/journal.pone.0132518 Text en © 2015 Wen et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Wen, Xue
Zhang, Delong
Liang, Bishan
Zhang, Ruibin
Wang, Zengjian
Wang, Junjing
Liu, Ming
Huang, Ruiwang
Reconfiguration of the Brain Functional Network Associated with Visual Task Demands
title Reconfiguration of the Brain Functional Network Associated with Visual Task Demands
title_full Reconfiguration of the Brain Functional Network Associated with Visual Task Demands
title_fullStr Reconfiguration of the Brain Functional Network Associated with Visual Task Demands
title_full_unstemmed Reconfiguration of the Brain Functional Network Associated with Visual Task Demands
title_short Reconfiguration of the Brain Functional Network Associated with Visual Task Demands
title_sort reconfiguration of the brain functional network associated with visual task demands
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4493060/
https://www.ncbi.nlm.nih.gov/pubmed/26146993
http://dx.doi.org/10.1371/journal.pone.0132518
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