Analysis of neurophysiological mechanisms in human motor imagery

人类运动想象的神经生理机制分析

• 批准号: 10680031
• 负责人: KASAI Tatsuya
• 金额: $ 0.96万
• 依托单位: Hiroshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10680031/
• 关键词: motor imagery; motor evoked potential; transcranial magnetic stimulation; motor learning; motor memory; motor imagery; MEP; TMR; FDI muscle; human; step contraction; ramp contraction; handedaess; plasticity; 運動誘発電位; 大脳半球; 人指し指; 磁気刺激法

We investigated changes in motor evoked potentials (MEPs) to explain why mental practice can improve motor performance. To examine the present aims, MEPs were recorded from right first dorsal interosseous (FDI) muscle during motor imagery of index finger movement. Main findings were following three points : 1) The primary motor cortex plays a role in the mental representation of motor acts. In particular, the amount of cortico-motoneuronal cell activity is affected by the different motor images utilizing the same muscle. 2) Right-left differences of MEP amplitude support the view of difference between left-handers and right-handers. That is, in case of right-handed subjects, MEP amplitude induced by motor imagery of right (dominant hand) finger movement were significantly larger than those induced by motor imagery of left (non-dominant hand) finger movement. In left-handed individuals, however, these right-left differences in MEP amplitude were not observed. 3) Concerning to training effects on function of motor imagery, the brain function for imaging motor skills differs between highly skilled (Kendo players) and less skilled subjects (normal subjects). These results indicate that motor imagery of highly skilled players involves performing concrete movement imagery (internal motor imagery) whereas that of less skilled players involves motor imagery of looking at the movement (external motor imagery).

我们调查了电动机诱发电位（MEP）的变化，以解释为什么心理实践可以改善运动性能。为了检查目前的目标，在食指手指运动的运动图像中，从右第一背侧（FDI）肌肉记录了MEP。主要发现遵循三点：1）主要运动皮层在运动行为的心理表示中起作用。特别是，使用相同肌肉的不同运动图像影响了皮质 - - 波纳神经元细胞活性的量。 2）MEP振幅的右左差支持左撇子和右撇子之间差异的视图。也就是说，在右手受试者的情况下，右手手指的运动图像引起的MEP振幅明显大于由左（非优势手）手指运动引起的运动图像所引起的。但是，在左撇子个体中，没有观察到这些右左差差异。 3）关于训练对运动图像功能的影响，成像运动技能的大脑功能在高技能（Kendo玩家）和熟练的受试者（正常受试者）之间有所不同。这些结果表明，高技能玩家的运动图像涉及执行具体运动图像（内部运动图像），而熟练的玩家的运动图像涉及观察运动的运动图像（外部运动图像）。

项目成果

Yahagi, S. and Kasai, T.: "Motor evoked potentials induced by motor imagery reveal a functional asymmetry of cortical motor control in left- and right-handed human subjects"Neuroscience Letters. 276. 185-188 (1999)

Yahagi, S. 和 Kasai, T.：“运动想象诱发的运动诱发电位揭示了左利手和右手人类受试者皮质运动控制的功能不对称”《神经科学快报》。

林司佳子, 長谷川善輝, 矢作晋, 笠井達哉: "運動イメージによる運動誘発電位の出現動態:剣道の鍛錬者と非鍛錬者の誘発電位(MEP)による検討"体育学研究. 46. 47-59 (2001)

Yoshiko Hayashi、Yoshiteru Hasekawa、Susumu Yahagi、Tatsuya Kasai：“运动想象导致的运动诱发电位出现的动力学：在剑道练习者和非训练者中使用诱发电位 (MEP) 进行检查”，《体育研究》46。47-。 59（2001）

Oishi, K., Kasai, T., Maeshima, T.: "Autonomic response specificity during motor imagery"Journal of Physilolgical Anthropology and Applied Human Science. 19. 255-261 (2000)

Oishi, K.、Kasai, T.、Maeshima, T.：“运动想象期间的自主反应特异性”生理人类学和应用人类科学杂志。

Tatsuya Kasai and Susumu Yahagi: "Motor evoked potentials of the first dorsal interosseous muscle in step and ramp index finger abduction"Muscle & Nerve. 22. 1419-1425 (1999)

Tatsuya Kasai 和 Susumu Yahagi：“步进和斜坡食指外展中第一背侧骨间肌的运动诱发电位”肌肉

Yahagi, S., Kasai, T.: "Motor evoked potentials indnced by motor imagery reveal a functional asymmetry of cortical motor control in left-and right-handed human subjects"Neuroscience Letters. 276. 185-188 (1999)

Yahagi, S.，Kasai, T.：“运动想象引起的运动诱发电位揭示了左利手和右手人类受试者皮质运动控制的功能不对称”《神经科学快报》。