Frontoparietal cortex and cerebellum contribution to the update of actual and mental motor performance during the day.
Fiche publication
Date publication
juillet 2016
Journal
Scientific reports
Auteurs
Membres identifiés du Cancéropôle Est :
Pr PAPAXANTHIS Charalambos
Tous les auteurs :
Bonzano L, Roccatagliata L, Ruggeri P, Papaxanthis C, Bove M
Lien Pubmed
Résumé
Actual and imagined movement speed increases from early morning until mid-afternoon. Here, we investigated the neural correlates of these daily changes. Fifteen subjects performed actual and imagined right finger opposition movement sequences at 8 am and 2 pm. Both actual and imagined movements were significantly faster at 2 pm than 8 am. In the morning, actual movements significantly activated the left primary somatosensory and motor areas, and bilaterally the cerebellum; in the afternoon activations were similar but reduced. Contrast analysis revealed greater activity in the cerebellum, the left primary sensorimotor cortex and parietal lobe in the morning than in the afternoon. Imagined movements in the morning significantly activated the parietal association cortices bilaterally, the left supplementary and premotor areas, and the right orbitofrontal cortex and cerebellum. In the afternoon, the frontal lobe was significantly activated with the right cerebellum. Contrast analysis revealed increased activity in the left parietal lobe in the morning than in the afternoon. For both tasks, speed in the morning was significantly related to the BOLD signal in the brain areas resulted more active. These findings suggest that motor performance is continuously updated on a daily basis with a predominant role of the frontoparietal cortex and cerebellum.
Mots clés
Adult, Brain Mapping, methods, Cerebellum, physiology, Female, Fingers, physiology, Frontal Lobe, physiology, Functional Laterality, physiology, Humans, Imagination, physiology, Male, Motor Cortex, physiology, Movement, physiology, Parietal Lobe, physiology, Psychomotor Performance, physiology, Young Adult
Référence
Sci Rep. 2016 07 22;6:30126