Modulation of corticospinal excitability dependent upon imagined force level

Nobuaki Mizuguchi, Izumi Umehara, Hiroki Nakata, Kazuyuki Kanosue

研究成果: Article

21 引用 (Scopus)

抄録

Motor imagery is defined as the mental execution of a movement without any muscle activity. In the present study, corticospinal excitability was assessed by motor evoked potentials (MEPs) when the subjects imagined isometric elbow flexion at various force levels. Electromyography was recorded from the right brachioradialis, the biceps brachii and the triceps brachii muscles. First, the maximum voluntary contraction (MVC) of elbow flexion was recorded in each subject. Subjects practiced performing 10, 30 and 60 % MVC using visual feedback. After the practice, MEPs were recorded during the imagery of elbow flexion with the forces of 10, 30 and 60 % MVC without any feedback. After the MEPs recording, we assigned subjects to reproduce the actual elbow flexion force at 10, 30 and 60 % MVC. The MEPs amplitudes in the brachioradialis and biceps brachii in the 60 % MVC condition were significantly greater than those in the 10 % MVC condition (p < 0.05). These findings suggest that the enhancement of corticospinal excitability during motor imagery is associated with an increase in imagined force level.

元の言語English
ページ(範囲)243-249
ページ数7
ジャーナルExperimental Brain Research
230
発行部数2
DOI
出版物ステータスPublished - 2013 10

Fingerprint

Motor Evoked Potentials
Elbow
Imagery (Psychotherapy)
Muscles
Sensory Feedback
Electromyography

ASJC Scopus subject areas

  • Neuroscience(all)

これを引用

Modulation of corticospinal excitability dependent upon imagined force level. / Mizuguchi, Nobuaki; Umehara, Izumi; Nakata, Hiroki; Kanosue, Kazuyuki.

:: Experimental Brain Research, 巻 230, 番号 2, 10.2013, p. 243-249.

研究成果: Article

Mizuguchi, Nobuaki ; Umehara, Izumi ; Nakata, Hiroki ; Kanosue, Kazuyuki. / Modulation of corticospinal excitability dependent upon imagined force level. :: Experimental Brain Research. 2013 ; 巻 230, 番号 2. pp. 243-249.
@article{8ad8dbe0919f4876a29256a978b0e711,
title = "Modulation of corticospinal excitability dependent upon imagined force level",
abstract = "Motor imagery is defined as the mental execution of a movement without any muscle activity. In the present study, corticospinal excitability was assessed by motor evoked potentials (MEPs) when the subjects imagined isometric elbow flexion at various force levels. Electromyography was recorded from the right brachioradialis, the biceps brachii and the triceps brachii muscles. First, the maximum voluntary contraction (MVC) of elbow flexion was recorded in each subject. Subjects practiced performing 10, 30 and 60 {\%} MVC using visual feedback. After the practice, MEPs were recorded during the imagery of elbow flexion with the forces of 10, 30 and 60 {\%} MVC without any feedback. After the MEPs recording, we assigned subjects to reproduce the actual elbow flexion force at 10, 30 and 60 {\%} MVC. The MEPs amplitudes in the brachioradialis and biceps brachii in the 60 {\%} MVC condition were significantly greater than those in the 10 {\%} MVC condition (p < 0.05). These findings suggest that the enhancement of corticospinal excitability during motor imagery is associated with an increase in imagined force level.",
keywords = "Force, Motor evoked potentials, Motor imagery, Transcranial magnetic stimulation",
author = "Nobuaki Mizuguchi and Izumi Umehara and Hiroki Nakata and Kazuyuki Kanosue",
year = "2013",
month = "10",
doi = "10.1007/s00221-013-3649-3",
language = "English",
volume = "230",
pages = "243--249",
journal = "Experimental Brain Research",
issn = "0014-4819",
publisher = "Springer Verlag",
number = "2",

}

TY - JOUR

T1 - Modulation of corticospinal excitability dependent upon imagined force level

AU - Mizuguchi, Nobuaki

AU - Umehara, Izumi

AU - Nakata, Hiroki

AU - Kanosue, Kazuyuki

PY - 2013/10

Y1 - 2013/10

N2 - Motor imagery is defined as the mental execution of a movement without any muscle activity. In the present study, corticospinal excitability was assessed by motor evoked potentials (MEPs) when the subjects imagined isometric elbow flexion at various force levels. Electromyography was recorded from the right brachioradialis, the biceps brachii and the triceps brachii muscles. First, the maximum voluntary contraction (MVC) of elbow flexion was recorded in each subject. Subjects practiced performing 10, 30 and 60 % MVC using visual feedback. After the practice, MEPs were recorded during the imagery of elbow flexion with the forces of 10, 30 and 60 % MVC without any feedback. After the MEPs recording, we assigned subjects to reproduce the actual elbow flexion force at 10, 30 and 60 % MVC. The MEPs amplitudes in the brachioradialis and biceps brachii in the 60 % MVC condition were significantly greater than those in the 10 % MVC condition (p < 0.05). These findings suggest that the enhancement of corticospinal excitability during motor imagery is associated with an increase in imagined force level.

AB - Motor imagery is defined as the mental execution of a movement without any muscle activity. In the present study, corticospinal excitability was assessed by motor evoked potentials (MEPs) when the subjects imagined isometric elbow flexion at various force levels. Electromyography was recorded from the right brachioradialis, the biceps brachii and the triceps brachii muscles. First, the maximum voluntary contraction (MVC) of elbow flexion was recorded in each subject. Subjects practiced performing 10, 30 and 60 % MVC using visual feedback. After the practice, MEPs were recorded during the imagery of elbow flexion with the forces of 10, 30 and 60 % MVC without any feedback. After the MEPs recording, we assigned subjects to reproduce the actual elbow flexion force at 10, 30 and 60 % MVC. The MEPs amplitudes in the brachioradialis and biceps brachii in the 60 % MVC condition were significantly greater than those in the 10 % MVC condition (p < 0.05). These findings suggest that the enhancement of corticospinal excitability during motor imagery is associated with an increase in imagined force level.

KW - Force

KW - Motor evoked potentials

KW - Motor imagery

KW - Transcranial magnetic stimulation

UR - http://www.scopus.com/inward/record.url?scp=84887433673&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887433673&partnerID=8YFLogxK

U2 - 10.1007/s00221-013-3649-3

DO - 10.1007/s00221-013-3649-3

M3 - Article

C2 - 23877227

AN - SCOPUS:84887433673

VL - 230

SP - 243

EP - 249

JO - Experimental Brain Research

JF - Experimental Brain Research

SN - 0014-4819

IS - 2

ER -