Titre
Beyond variability: Subjective timing and the neurophysiology of motor cognition.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Perruchoud, D.
Auteure/Auteur
Fiorio, M.
Auteure/Auteur
Cesari, P.
Auteure/Auteur
Ionta, S.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1876-4754
Statut éditorial
Publié
Date de publication
2018
Volume
11
Numéro
1
Première page
175
Dernière page/numéro d’article
180
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article ; Validation Studies
Publication Status: ppublish
Publication Status: ppublish
Résumé
Movement simulation helps increasing the chances to reach goals. A cognitive task used to study the neuro-behavioral aspects of movement simulation is mental rotation: people mentally re-orient rotated pictures of hands. However, the involvement of the primary motor cortex (M1) in mental rotation is largely controversial.
Such inconsistency could arise from potential methodological flaws in experimental procedures and data analysis. In particular, until now, the timing of M1 activity has been computed in absolute terms: from the onset of mental rotation (onset-locked), neglecting intra- and inter-subject variability.
A novel phase-locked approach is introduced to synchronize the same phases of cognitive processing among different subjects and sessions. This approach was validated in the particular case of corticospinal excitability of the motor cortex during mental rotation.
We identified the relative time-windows during which the excitability of M1 is effector-specifically modulated by different features of mental rotation. These time windows correspond to the 55%-85% of the subjective timing.
In sum, (i) we introduce a new method to study the neurophysiology of motor cognition, and (ii) validating this method, we shed new light on the involvement of M1 in movement simulation.
Such inconsistency could arise from potential methodological flaws in experimental procedures and data analysis. In particular, until now, the timing of M1 activity has been computed in absolute terms: from the onset of mental rotation (onset-locked), neglecting intra- and inter-subject variability.
A novel phase-locked approach is introduced to synchronize the same phases of cognitive processing among different subjects and sessions. This approach was validated in the particular case of corticospinal excitability of the motor cortex during mental rotation.
We identified the relative time-windows during which the excitability of M1 is effector-specifically modulated by different features of mental rotation. These time windows correspond to the 55%-85% of the subjective timing.
In sum, (i) we introduce a new method to study the neurophysiology of motor cognition, and (ii) validating this method, we shed new light on the involvement of M1 in movement simulation.
PID Serval
serval:BIB_18974F763108
PMID
Open Access
Oui
Date de création
2017-10-26T08:15:17.950Z
Date de création dans IRIS
2025-05-20T19:33:41Z
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Nom
29031881_PostPrint.pdf
Version du manuscrit
postprint
Taille
565.89 KB
Format
Adobe PDF
PID Serval
serval:BIB_18974F763108.P001
URN
urn:nbn:ch:serval-BIB_18974F7631082
Somme de contrôle
(MD5):b335c16a84718bf8f1feaf26c00a0370