Dissociation between Temporal and Spatial Anticipation in the Neural Dynamics of Goal-directed Movement Preparation

Autor:	Félix-Antoine Savoie, Cesar Augusto Canaveral, Frédéric Danion, Pierre-Michel Bernier
Přispěvatelé:	Université de Sherbrooke (UdeS), Institut de Neurosciences de la Timone (INT), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání:	2020
Předmět:	Motivation Dissociation (neuropsychology) Movement [SCCO.NEUR]Cognitive science/Neuroscience Cognitive Neuroscience 05 social sciences Stimulus (physiology) Anticipation Psychological 050105 experimental psychology 03 medical and health sciences Cognition 0302 clinical medicine Humans 0501 psychology and cognitive sciences Psychology Goals Neuroscience Psychomotor Performance 030217 neurology & neurosurgery
Zdroj:	Journal of Cognitive Neuroscience Journal of Cognitive Neuroscience, Massachusetts Institute of Technology Press (MIT Press), 2020, Special Focus Deriving from a Symposium at the 2018 Annual Meeting of Cognitive Neuroscience Society, Entitled, “What Makes Musical Rhythm Special: Cross-species, Developmental and Social Perspectives”, 32 (7), pp.1301-1315. ⟨10.1162/jocn_a_01547⟩ Journal of Cognitive Neuroscience, 2020, Special Focus Deriving from a Symposium at the 2018 Annual Meeting of Cognitive Neuroscience Society, Entitled, “What Makes Musical Rhythm Special: Cross-species, Developmental and Social Perspectives”, 32 (7), pp.1301-1315. ⟨10.1162/jocn_a_01547⟩
ISSN:	1530-8898 0898-929X
Popis:	It is well documented that providing advanced information regarding the spatial location of a target stimulus (i.e., spatial anticipation) or its timing of occurrence (i.e., temporal anticipation) influences reach preparation, reducing RTs. Yet, it remains unknown whether the RT gains attributable to temporal and spatial anticipation are subtended by similar preparatory dynamics. Here, this issue is addressed in humans by investigating EEG beta-band activity during reach preparation. Participants performed a reach RT task in which they initiated a movement as fast as possible toward visual targets following their appearance. Temporal anticipation was manipulated by having the target appear after a constant or variable delay period, whereas spatial anticipation was manipulated by precueing participants about the upcoming target location in advance or not. Results revealed that temporal and spatial anticipation both reduced reach RTs, with no interaction. Interestingly, temporal and spatial anticipation were associated with fundamentally different patterns of beta-band modulations. Temporal anticipation was associated with beta-band desynchronization over contralateral sensorimotor regions specifically around the expected moment of target onset, the magnitude of which was correlated with RT modulations across participants. In contrast, spatial anticipation did not influence sensorimotor activity but rather led to increased beta-band power over bilateral parieto-occipital regions during the entire delay period. These results argue for distinct states of preparation incurred by temporal and spatial anticipation. In particular, sensorimotor beta-band desynchronization may reflect the timely disinhibition of movement-related neuronal ensembles at the expected time of movement initiation, without reflecting its spatial parameters per se.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d9438857b7b4f5cb2328a50b4e4a246 https://doi.org/10.1162/jocn_a_01547 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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