Early attentional processes distinguish selective from global motor inhibitory control : An electrical neuroimaging study

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Etat: Supprimée
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ID Serval
serval:BIB_7B516700D624
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Early attentional processes distinguish selective from global motor inhibitory control : An electrical neuroimaging study
Périodique
NeuroImage
Auteur⸱e⸱s
Sallard E., Barral J., Chavan C. F., Spierer L.
ISSN-L
1053-8119
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
87
Pages
183-189
Langue
anglais
Résumé
The rapid stopping of specific parts of movements is frequently required in daily life. Yet, whether selective inhibitory control of movements is mediated by a specific neural pathway or by the combination between a global stopping of all ongoing motor activity followed by the re-initiation of task-relevant movements remains unclear. To address this question, we applied time-wise statistical analyses of the topography, global field power and electrical sources of the event-related potentials to the global vs selective inhibition stimuli presented during a Go/NoGo task. Participants (n = 18) had to respond as fast as possible with their two hands to Go stimuli and to withhold the response from the two hands (global inhibition condition, GNG) or from only one hand (selective inhibition condition, SNG) when specific NoGo stimuli were presented. Behaviorally, we replicated previous evidence for slower response times in the SNG than in the Go condition. Electrophysiologically, there were two distinct phases of event-related potentials modulations between the GNG and the SNG conditions. At 110âeuro"150 ms post-stimulus onset, there was a difference in the strength of the electric field without concomitant topographic modulation, indicating the differential engagement of statistically indistinguishable configurations of neural generators for selective and global inhibitory control. At 150âeuro"200 ms, there was topographic modulation, indicating the engagement of distinct brain networks. Source estimations localized these effects within bilateral temporo-parieto-occipital and within parieto-central networks, respectively. Our results suggest that while both types of motor inhibitory control depend on global stopping mechanisms, selective and global inhibition still differ quantitatively at early attention-related processing phases.
Mots-clé
EEG topography, Electrical neuroimaging, Electrical sources, Inhibitory control, Selective inhibition
Création de la notice
14/08/2014 8:03
Dernière modification de la notice
20/08/2019 14:37
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