Examination of neural control mechanism behind voluntary contraction of upper and lower limb muscles by using corticomuscular coherence analysis

使用皮质肌肉相干分析检查上肢和下肢肌肉自主收缩背后的神经控制机制

• 批准号: 21700594
• 负责人: USHIYAMA Junichi
• 金额: $ 2.83万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21700594/
• 关键词: 運動制御; 運動皮質; 群化放電; 筋

To know how our brain controls our voluntary movements, I have examined the functional corticomuscular coupling by measuring coherence between electroencephalogram (EEG) signals over the sensorimotor cortex and electromyogram (EMG) signals of contralateral limb muscles during tonic isometric voluntary contraction. Obtained results were that : (1) there existed muscle dependency of the magnitude of EEG-EMG coherence ; i.e., the distal lower limb muscles showed largest coherence ; (2) the magnitude of EEG-EMG coherence was smaller in well-trained athletes, such as ballet-dancers and weightlifters, than in untrained subjects ; (3) Modulation patterns of EEG-EMG coherence by increasing contraction levels were different between muscles.

为了了解我们的大脑是如何控制我们的随意运动的，我通过测量感觉运动皮层的脑电图（EEG）信号和对侧肢体肌肉在强直等长随意收缩期间的肌电图（EMG）信号之间的一致性，研究了功能性皮质-肌肉耦合。结果表明：(1)脑电图-肌电图相干程度存在肌肉依赖性；即下肢远端肌肉表现出最大的一致性；(2)训练良好的运动员（如芭蕾舞演员和举重运动员）的脑电图-肌电相干性幅度小于未经训练的被试；(3)不同肌肉收缩水平增加对脑电图-肌电相干性的调节模式不同。

项目成果

Difference in modulation of corticomuscular coherence by changing exerted force levels among several upper and lower limb muscles

通过改变上肢和下肢肌肉之间的用力水平来调节皮质肌肉一致性的差异

• 发表时间: 2010
• 作者: Ushiyama J;Ushiba J;Kimura A;Liu M
• 通讯作者: Liu M

Muscle dependency of corticomuscular coherence in upper and lower extremity muscles

上肢和下肢肌肉皮质肌肉一致性的肌肉依赖性

• 发表时间: 2010
• 作者: Ushiyama J;Ushiba J;Kimura A;Liu M
• 通讯作者: Liu M

Muscle fatigue-induced enhancement of the corticomuscular coherence following sustained submaximal isometric contraction of the tibialis anterior muscle.

胫骨前肌持续次最大等长收缩后，肌肉疲劳引起皮质肌肉一致性增强。

• 发表时间: 2011
• 期刊: J Appl Physiol 110
• 作者: Ushiyama J;Katsu M;Masakado Y;Kimura A;Liu M;Ushiba J.
• 通讯作者: Ushiba J.

Difference in modulation of corticomuscular coherence by changing exerted force levels among several upper and lower limb muscles.

通过改变上肢和下肢肌肉之间的作用力水平来调节皮质肌肉一致性的差异。

• 发表时间: 2010
• 作者: Ushiyama J;Ushiba J;Kimura A;Liu M.
• 通讯作者: Liu M.

Muscle dependency of corticomuscular coherence in upper and lower extremity muscles.

上肢和下肢肌肉皮质肌肉一致性的肌肉依赖性。

• 发表时间: 2010
• 作者: Ushiyama J;Ushiba J;Kimura A;Liu M.
• 通讯作者: Liu M.