Influence of somatosensory input on corticospinal excitability during motor imagery
Influence of somatosensory input on corticospinal excitability during motor imagery
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DOI：
10.1016/j.neulet.2012.02.073
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发表时间：
2012-04-11
影响因子：
2.5
通讯作者：
Kanosue, Kazuyuki
中科院分区：
文献类型：
--
作者：
Mizuguchi, Nobuaki;Sakamoto, Masanori;Kanosue, Kazuyuki
我们以前的研究表明，皮质脊髓的兴奋性在图像的挤压泡沫球增强的躯体感觉输入所产生的被动举行的球。在本研究中，使用相同的实验模型，我们调查是否皮质脊髓兴奋性的影响举行的对象与想象的手相反的手。皮质脊髓兴奋性进行了评估，监测运动诱发电位（MEP）在第一背侧骨间肌经颅磁刺激运动皮层在运动想象。受试者被要求想象用右手（实验1）或左手（实验2）挤压一个泡沫球，同时什么都不拿（挤压条件），右手握一个球（右条件）或左手握一个球（左条件）。运动想象时，仅当握手和想象手在同侧时，MEP的幅值增加。这些结果表明，当躯体感觉刺激和运动想象在同侧进行时，性能改善和康复训练将更有效。(C)2012爱思唯尔爱尔兰有限公司保留所有权利。
Our previous studies showed that corticospinal excitability during imagery of squeezing a foam ball was enhanced by somatosensory input generated by passively holding the ball. In the present study, using the same experimental model, we investigated whether corticospinal excitability was influenced by holding the object with the hand opposite to the imagined hand. Corticospinal excitability was assessed by monitoring motor evoked potentials (MEPs) in the first dorsal interosseous muscle following transcranial magnetic stimulation over the motor cortex during motor imagery. Subjects were asked to imagine squeezing a foam ball with the right hand (experiment 1) or the left hand (experiment 2), while either holding nothing (Null condition), a ball in the right hand (Right condition) or a ball in the left hand (Left condition). The MEPs amplitude during motor imagery was increased, only when the holding hand and the imagined hand were on the same side. These results suggest that performance improvement and rehabilitation exercises will be more effective when somatosensory stimulation and motor imagery are done on the same side. (C) 2012 Elsevier Ireland Ltd. All rights reserved.