Examination ofgeneration mechanisms behind corticomuscular coherence from a standpoint of somatosensory afferent feedback

从体感传入反馈的角度检查皮质肌肉一致性背后的生成机制

• 批准号: 23700683
• 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: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23700683/
• 关键词: 運動皮質; Ia求心性神経; 緊張性振動反射; 骨格筋; 振動刺激; 運動単位

This study aimed to examine the contribution of somatosensory afferent feedback to generation of corticomuscular coherence observed during tonic isometric voluntary contraction. As results, I have obtained following findings:1) The magnitude of corticomuscular coherence was decreased after prolonged tendon vibration, which is known as a technique attenuating Ia afferent feedback, in half of the participants;2) Involuntary muscle activity induced by muscle or tendon vibration, so-called “tonic vibration reflex”, was significantly coupled with electroencephalogram activity over the sensorimotor cortex at around 20 Hz;3) motor unit activities during tonic vibration reflex could be divided into the firing derived from spinal stretch reflex loop and the one derived from efferent input from the cortex.

本研究旨在探讨在强直性等长随意收缩过程中，躯体感觉传入反馈对皮质-肌肉一致性产生的作用。结果发现：1）长时间的肌腱振动（一种减弱Ia类传入反馈的技术）后，半数受试者的皮质肌相干性降低;2）由肌肉或肌腱振动引起的不自主肌肉活动（即所谓的“强直性振动反射”）与感觉运动皮层上20 Hz左右的脑电图活动显著耦合;（3）强直性振动反射时的运动单位活动可分为来自脊髓牵张反射环路的放电和来自皮层传出输入的放电。

项目成果

Oscillatory corticomuscular coupling during isometric voluntary contraction influences force steadiness and reaction time

等长随意收缩期间的振荡皮质肌肉耦合影响力稳定性和反应时间

• 发表时间: 2011
• 作者: Ushiyama J;Matsuya R;Kimura A;Liu M;Ushiba J.
• 通讯作者: Ushiba J.

脳波筋電図コヒーレンスを用いた緊張性振動反射の発生メカニズムに関する検討

利用脑电图相干性研究强直振动反射的产生机制

• 发表时间: 2012
• 作者: Ushiyama J;Ushiba J;牛山潤一;牛山潤一;渡邉佳宏,牛山潤一,兵頭昌樹,牛場潤一;渡邉佳宏,牛山潤一,兵頭昌樹,牛場潤一
• 通讯作者: 渡邉佳宏,牛山潤一,兵頭昌樹,牛場潤一

Oscillatory corticomuscular coupling as a determinant of motor precision and quickness.

振荡皮质肌肉耦合是运动精度和速度的决定因素。

• 发表时间: 2013
• 期刊: Adv Exerc Sports Physiol
• 作者: 吉松梓;（監修）星野敏男;金子和正;Ushiyama J.
• 通讯作者: Ushiyama J.

Oscillatory corticomuscular coupling as a determinant of motor precision and quickness

振荡皮质肌肉耦合是运动精度和速度的决定因素

• 发表时间: 2013
• 期刊: Adv Exerc Sports Physiol
• 作者: 吉松梓;（監修）星野敏男;金子和正;Ushiyama J.;牛山潤一;Ushiayma J
• 通讯作者: Ushiayma J

運動出力の巧緻性・俊敏性を左右する皮質-筋カップリング

影响运动输出的精细度和敏捷性的皮层-肌肉耦合

• 发表时间: 2012
• 作者: Ushiyama J;Ushiba J;牛山潤一;牛山潤一
• 通讯作者: 牛山潤一