Frontal EEG theta/beta ratio during mind wandering episodes.
Attentional control
EEG theta/beta ratio
Mind wandering
Journal
Biological psychology
ISSN: 1873-6246
Titre abrégé: Biol Psychol
Pays: Netherlands
ID NLM: 0375566
Informations de publication
Date de publication:
01 2019
01 2019
Historique:
received:
25
07
2018
revised:
10
10
2018
accepted:
14
11
2018
pubmed:
21
11
2018
medline:
2
5
2019
entrez:
21
11
2018
Statut:
ppublish
Résumé
In resting-state EEG, the ratio between frontal power in the slow theta frequency band and the fast beta frequency band (the theta/beta ratio, TBR) has previously been negatively related to attentional control. Also, increased theta and reduced beta power were observed during mind wandering (MW) compared to episodes of focused attention. Thus, increased resting-state frontal TBR could be related to MW, suggesting that previously observed relationships between TBR and attentional control could reflect MW episodes increasing the average resting state TBR in people with low attentional control. To replicate and extend the previous theta and beta MW effects for frontal TBR recordings and test if MW related changes in frontal TBR are related to attentional control. Twenty-six healthy participants performed a 40-minute breath-counting task, after a baseline EEG recording, while EEG was measured and participants indicated MW episodes with button presses. Frontal TBR was significantly higher during MW episodes than during on-task periods. However, no relation between frontal TBR and attentional control was found. This confirms that frontal TBR varies with MW, which is thought to reflect, among other things, a state of reduced top-down attentional control over thoughts.
Sections du résumé
BACKGROUND
In resting-state EEG, the ratio between frontal power in the slow theta frequency band and the fast beta frequency band (the theta/beta ratio, TBR) has previously been negatively related to attentional control. Also, increased theta and reduced beta power were observed during mind wandering (MW) compared to episodes of focused attention. Thus, increased resting-state frontal TBR could be related to MW, suggesting that previously observed relationships between TBR and attentional control could reflect MW episodes increasing the average resting state TBR in people with low attentional control.
GOALS
To replicate and extend the previous theta and beta MW effects for frontal TBR recordings and test if MW related changes in frontal TBR are related to attentional control.
METHOD
Twenty-six healthy participants performed a 40-minute breath-counting task, after a baseline EEG recording, while EEG was measured and participants indicated MW episodes with button presses.
RESULTS
Frontal TBR was significantly higher during MW episodes than during on-task periods. However, no relation between frontal TBR and attentional control was found.
CONCLUSIONS
This confirms that frontal TBR varies with MW, which is thought to reflect, among other things, a state of reduced top-down attentional control over thoughts.
Identifiants
pubmed: 30458199
pii: S0301-0511(18)30560-X
doi: 10.1016/j.biopsycho.2018.11.003
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
19-27Informations de copyright
Copyright © 2018 Elsevier B.V. All rights reserved.