Titre
Post-switching beta synchronization reveals concomitant sensory reafferences and active inhibition processes.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Sallard, E.
Auteure/Auteur
Tallet, J.
Auteure/Auteur
Thut, G.
Auteure/Auteur
Deiber, M.P.
Auteure/Auteur
Barral, J.
Auteure/Auteur
Liens vers les personnes
ISSN
1872-7549
Statut éditorial
Publié
Date de publication
2014-09-01
Volume
271
Première page
365
Dernière page/numéro d’article
373
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Publication Status: ppublish
Résumé
It is known that post-movement beta synchronization (PMBS) is involved both in active inhibition and in sensory reafferences processes. The aim of this study was examine the temporal and spatial dynamics of the PMBS involved during multi-limb coordination task. We investigated post-switching beta synchronization (assigned PMBS) using time-frequency and source estimations analyzes. Participants (n=17) initiated an auditory-paced bimanual tapping. After a 1,500 ms preparatory period, an imperative stimulus required to either selectively stop the left while maintaining the right unimanual tapping (Switch condition: SWIT) or to continue the bimanual tapping (Continue condition: CONT). PMBS significantly increased in SWIT compared to CONT with maximal difference within right central region in broad-band 14-30 Hz and within left central region in restricted-band 22-26 Hz. Source estimations localized these effects within right pre-frontal cortex and left parietal cortex, respectively. A negative correlation showed that participants with a low percentage of errors in SWIT had a large PMBS amplitude within right parietal and frontal cortices. This study shows for the first time simultaneous PMBS with distinct functions in different brain regions and frequency ranges. The left parietal PMBS restricted to 22-26 Hz could reflect the sensory reafferences of the right hand tapping disrupted by the switching. In contrast, the right pre-frontal PMBS in a broad-band 14-30 Hz is likely reflecting the active inhibition of the left hand stopped. Finally, correlations between behavioral performance and the magnitude of the PMBS suggest that beta oscillations can be viewed as a marker of successful active inhibition.
Sujets
PID Serval
serval:BIB_FA4729882A69
PMID
Date de création
2018-06-18T14:23:48.353Z
Date de création dans IRIS
2025-05-21T05:29:23Z