Large-scale network interactions involved in dividing attention between the external environment and internal thoughts to pursue two distinct goals.
Creativity
Divergent thinking
Dual-tasking
Salience network
Time-varying connectivity
Journal
NeuroImage
ISSN: 1095-9572
Titre abrégé: Neuroimage
Pays: United States
ID NLM: 9215515
Informations de publication
Date de publication:
15 08 2019
15 08 2019
Historique:
received:
28
11
2018
revised:
14
03
2019
accepted:
19
04
2019
pubmed:
25
4
2019
medline:
1
2
2020
entrez:
25
4
2019
Statut:
ppublish
Résumé
Previous research suggests that default-mode network (DMN) and dorsal attention network (DAN) are involved in internally- and externally-directed attention, respectively, through interactions with salience network (SN) and frontoparietal network (FPCN). Performing a task requiring external attention is often accompanied by a down-regulation of attention to internal thoughts, and vice-versa. In contrast, we often divide our attention between the external environment and internal thoughts to pursue distinct goals, yet virtually no prior research has examined how brain networks support this functionally critical neurocognitive process. In the current study, participants planned their responses for an upcoming alternate uses divergent thinking task (AUT-Condition), indicated whether arrows were pointing left or right (Arrows-Condition) or performed both tasks simultaneously (Dual-Task condition). Behaviorally, the Dual-Task condition was associated with equivalent generation of alternate uses but increased RT variability compared to the single-task conditions. Static connectivity analyses indicated that FPCN and SN increased their connectivity to DMN and reduced their connectivity to DAN during the Dual-Task condition and the AUT-Condition compared to the Arrows-Condition. Furthermore, DAN-SN connectivity was highest during the Arrows-Condition, intermediate during the Dual-Task condition and lowest during the AUT-Condition. Finally, time-varying connectivity analyses indicated that individuals who reported spending less time thinking of alternate uses during the Dual-Task condition spent more time in a state associated with performing the Arrows-Condition. Overall, our results suggest that interactions between DMN, FPCN, SN and DAN allow internal-external dual-tasking, and that time-varying functional connectivity between these networks is sensitive to attentional fluctuations between tasks during dual-tasking.
Identifiants
pubmed: 31018153
pii: S1053-8119(19)30340-4
doi: 10.1016/j.neuroimage.2019.04.054
pmc: PMC6591027
mid: NIHMS1528042
pii:
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
49-59Subventions
Organisme : NIA NIH HHS
ID : R01 AG008441
Pays : United States
Organisme : NIMH NIH HHS
ID : R01 MH060941
Pays : United States
Informations de copyright
Copyright © 2019 Elsevier Inc. All rights reserved.
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