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Long-Term Effects of Attentional Performance on Functional Brain Network Topology
Individuals differ in their cognitive resilience. Less resilient people demonstrate a greater tendency to vigilance decrements within sustained attention tasks. We hypothesized that a period of sustained attention is followed by prolonged changes in the organization of “resting state” brain networks...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3767656/ https://www.ncbi.nlm.nih.gov/pubmed/24040185 http://dx.doi.org/10.1371/journal.pone.0074125 |
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author | Breckel, Thomas P. K. Thiel, Christiane M. Bullmore, Edward T. Zalesky, Andrew Patel, Ameera X. Giessing, Carsten |
author_facet | Breckel, Thomas P. K. Thiel, Christiane M. Bullmore, Edward T. Zalesky, Andrew Patel, Ameera X. Giessing, Carsten |
author_sort | Breckel, Thomas P. K. |
collection | PubMed |
description | Individuals differ in their cognitive resilience. Less resilient people demonstrate a greater tendency to vigilance decrements within sustained attention tasks. We hypothesized that a period of sustained attention is followed by prolonged changes in the organization of “resting state” brain networks and that individual differences in cognitive resilience are related to differences in post-task network reorganization. We compared the topological and spatial properties of brain networks as derived from functional MRI data (N = 20) recorded for 6 mins before and 12 mins after the performance of an attentional task. Furthermore we analysed changes in brain topology during task performance and during the switches between rest and task conditions. The cognitive resilience of each individual was quantified as the rate of increase in response latencies over the 32-minute time course of the attentional paradigm. On average, functional networks measured immediately post-task demonstrated significant and prolonged changes in network organization compared to pre-task networks with higher connectivity strength, more clustering, less efficiency, and shorter distance connections. Individual differences in cognitive resilience were significantly correlated with differences in the degree of recovery of some network parameters. Changes in network measures were still present in less resilient individuals in the second half of the post-task period (i.e. 6–12 mins after task completion), while resilient individuals already demonstrated significant reductions of functional connectivity and clustering towards pre-task levels. During task performance brain topology became more integrated with less clustering and higher global efficiency, but linearly decreased with ongoing time-on-task. We conclude that sustained attentional task performance has prolonged, “hang-over” effects on the organization of post-task resting-state brain networks; and that more cognitively resilient individuals demonstrate faster rates of network recovery following a period of attentional effort. |
format | Online Article Text |
id | pubmed-3767656 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-37676562013-09-13 Long-Term Effects of Attentional Performance on Functional Brain Network Topology Breckel, Thomas P. K. Thiel, Christiane M. Bullmore, Edward T. Zalesky, Andrew Patel, Ameera X. Giessing, Carsten PLoS One Research Article Individuals differ in their cognitive resilience. Less resilient people demonstrate a greater tendency to vigilance decrements within sustained attention tasks. We hypothesized that a period of sustained attention is followed by prolonged changes in the organization of “resting state” brain networks and that individual differences in cognitive resilience are related to differences in post-task network reorganization. We compared the topological and spatial properties of brain networks as derived from functional MRI data (N = 20) recorded for 6 mins before and 12 mins after the performance of an attentional task. Furthermore we analysed changes in brain topology during task performance and during the switches between rest and task conditions. The cognitive resilience of each individual was quantified as the rate of increase in response latencies over the 32-minute time course of the attentional paradigm. On average, functional networks measured immediately post-task demonstrated significant and prolonged changes in network organization compared to pre-task networks with higher connectivity strength, more clustering, less efficiency, and shorter distance connections. Individual differences in cognitive resilience were significantly correlated with differences in the degree of recovery of some network parameters. Changes in network measures were still present in less resilient individuals in the second half of the post-task period (i.e. 6–12 mins after task completion), while resilient individuals already demonstrated significant reductions of functional connectivity and clustering towards pre-task levels. During task performance brain topology became more integrated with less clustering and higher global efficiency, but linearly decreased with ongoing time-on-task. We conclude that sustained attentional task performance has prolonged, “hang-over” effects on the organization of post-task resting-state brain networks; and that more cognitively resilient individuals demonstrate faster rates of network recovery following a period of attentional effort. Public Library of Science 2013-09-09 /pmc/articles/PMC3767656/ /pubmed/24040185 http://dx.doi.org/10.1371/journal.pone.0074125 Text en © 2013 Breckel 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 Breckel, Thomas P. K. Thiel, Christiane M. Bullmore, Edward T. Zalesky, Andrew Patel, Ameera X. Giessing, Carsten Long-Term Effects of Attentional Performance on Functional Brain Network Topology |
title | Long-Term Effects of Attentional Performance on Functional Brain Network Topology |
title_full | Long-Term Effects of Attentional Performance on Functional Brain Network Topology |
title_fullStr | Long-Term Effects of Attentional Performance on Functional Brain Network Topology |
title_full_unstemmed | Long-Term Effects of Attentional Performance on Functional Brain Network Topology |
title_short | Long-Term Effects of Attentional Performance on Functional Brain Network Topology |
title_sort | long-term effects of attentional performance on functional brain network topology |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3767656/ https://www.ncbi.nlm.nih.gov/pubmed/24040185 http://dx.doi.org/10.1371/journal.pone.0074125 |
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