Visual Attention and Motion Visibility Modulate Motor Resonance during Observation of Human Walking in Different Manners.
action observation
attention
gait
motor resonance
transcranial magnetic stimulation
Journal
Brain sciences
ISSN: 2076-3425
Titre abrégé: Brain Sci
Pays: Switzerland
ID NLM: 101598646
Informations de publication
Date de publication:
22 May 2021
22 May 2021
Historique:
received:
18
04
2021
revised:
15
05
2021
accepted:
20
05
2021
entrez:
2
6
2021
pubmed:
3
6
2021
medline:
3
6
2021
Statut:
epublish
Résumé
To advance our knowledge on the motor system during cyclic gait observation, we aimed to explore the effects of gaze fixation on corticospinal excitability evaluated by single-pulse transcranial magnetic stimulation (TMS). Fourteen healthy adult volunteers watched a video of a demonstrator walking on a treadmill under three different conditions: (1) observing the right lower limb, (2) observing the right ankle joint, and (3) observing the right lower limb on a video focused on the area below the knee. In each condition, motor-evoked potentials elicited by TMS in the tibialis anterior (TA) muscle were measured synchronously with the demonstrator's initial contact and toe-off points. Directing visual attention to the ankle joint and focusing on its movements caused corticospinal facilitation in the TA muscle compared with watching the video without any visual fixation. In addition, phase-dependent differences in corticospinal excitability between the initial contact and toe-off points were only detected when the visibility range was restricted to below the knee. Our findings indicated that motor resonance during cyclic gait observation is modulated by visual attention and motion visibility in different activation manners.
Identifiants
pubmed: 34067268
pii: brainsci11060679
doi: 10.3390/brainsci11060679
pmc: PMC8224780
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : Japan Society for the Promotion of Science
ID : JP15K16384
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