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Tytuł pozycji:

Motor activation is modulated by visual experience during cyclic gait observation: A transcranial magnetic stimulation study.

Tytuł:
Motor activation is modulated by visual experience during cyclic gait observation: A transcranial magnetic stimulation study.
Autorzy:
Ito T; Department of Rehabilitation, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Kurashiki, Okayama, Japan.
Tsubahara A; Department of Rehabilitation, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Kurashiki, Okayama, Japan.
Shiraga Y; Rehabilitation Center, Kawasaki Medical School Hospital, Kurashiki, Okayama, Japan.
Yoshimura Y; Department of Rehabilitation, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Kurashiki, Okayama, Japan.
Kimura D; Department of Rehabilitation, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Kurashiki, Okayama, Japan.
Suzuki K; Department of Environmental and Preventive Medicine, Graduate School of Medical Science, Kanazawa University, Kanazawa, Ishikawa, Japan.
Hanayama K; Department of Rehabilitation Medicine, Kawasaki Medical School, Kurashiki, Okayama, Japan.
Źródło:
PloS one [PLoS One] 2020 Jan 28; Vol. 15 (1), pp. e0228389. Date of Electronic Publication: 2020 Jan 28 (Print Publication: 2020).
Typ publikacji:
Journal Article; Research Support, Non-U.S. Gov't
Język:
English
Imprint Name(s):
Original Publication: San Francisco, CA : Public Library of Science
MeSH Terms:
Gait/*physiology
Motor Cortex/*physiology
Transcranial Magnetic Stimulation/*methods
Evoked Potentials, Motor ; Female ; Healthy Volunteers ; Humans ; Male ; Photic Stimulation ; Young Adult
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Entry Date(s):
Date Created: 20200129 Date Completed: 20200417 Latest Revision: 20200417
Update Code:
20240105
PubMed Central ID:
PMC6986743
DOI:
10.1371/journal.pone.0228389
PMID:
31990939
Czasopismo naukowe
Transcranial magnetic stimulation (TMS) has been widely utilized to noninvasively explore the motor system during the observation of human movement. However, few studies have characterized motor cortex activity during periodic gait observation. Thus, this study examined the effects of an observer's visual experience and/or intention to imitate on corticospinal excitability during the observation of another's gait. Twenty-six healthy volunteers were included in this study and allocated to two different groups. Participants in the visual experience group had formal experience with gait observation (physical therapist training), while those in the control group did not. Motor-evoked potentials induced by TMS in the tibialis anterior and soleus muscles were measured as surrogates of corticospinal excitability. Participants were seated and, while resting, they observed a demonstrator's gait or observed it with the intention to subsequently reproduce it. Compared with the resting state, cyclic gait observation led to significant corticospinal facilitation in the tibialis anterior and soleus muscles. However, this pattern of corticospinal facilitation in the measured muscles was not coupled to the pattern of crural muscle activity during actual gait and was independent of the step cycle. This motor cortex facilitation effect during gait observation was enhanced by the observer's visual experience in a manner that was not step cycle-dependent, while the observer's intent to imitate did not affect corticospinal excitatory input to either muscle. In addition, visual experience did not modulate corticospinal excitability in gait-related crural muscles. Our findings indicate that motor cortex activity during gait observation is not in line with the timing of muscle activity during gait execution and is modulated by an individual's gait observation experience. These results suggest that visual experience acquired from repetitive gait observation may facilitate the motor system's control on bipedal walking, but may not promote the learning of muscle activity patterns.
Competing Interests: The authors have declared that no competing interests exist.
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