Somatosensory cortex excitability changes due to differences in instruction conditions of motor imagery
Somatosensory cortex excitability changes due to differences in instruction conditions of motor imagery
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DOI：
10.1080/08990220.2017.1368476
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发表时间：
2017-01-01
影响因子：
0.9
通讯作者：
Higashi, Toshio
中科院分区：
文献类型：
--
作者：
Hasegawa, Takashi;Miyata, Hironori;Higashi, Toshio
目的生动的运动想象似乎与提高运动学习效率有关。然而，在测量生动的运动想象的实际困难保证新的分析方法。本研究的目的是确定的指令条件下，生动的运动图像可以更容易地看到和兴奋性的感觉皮层，因为它涉及到运动图像。材料与方法：共15名健康的右撇子志愿者被要求想象抓住一个橡胶球下，只有口头指令条件（口头条件），口头+视觉指令条件（视觉条件），和口头+执行（物理抓住一个真实的球）条件（执行条件）。我们通过比较每种条件下的体感诱发电位与其余（对照）条件下的体感皮层兴奋性，分析了运动图像相关的变化。我们还使用了视觉模拟量表来衡量主题报告的生动形象。结果N33成分在执行状态下显著低于静息状态（p
Purpose Vivid motor imagery appears to be associated with improved motor learning efficiency. However, the practical difficulties in measuring vivid motor imagery warrant new analytical approaches. The present study aimed to determine the instruction conditions for which vividness in motor imagery could be more easily seen and the excitability of the sensory cortex as it relates to the motor image. Materials and methods In total, 15 healthy, right-handed volunteers were instructed to imagine grasping a rubber ball under a verbal-only instruction condition (verbal condition), a verbal+visual instruction condition (visual condition), and a verbal+execution (physically grasping a real ball) condition (execution condition). We analyzed motor imagery-related changes in somatosensory cortical excitability by comparing somatosensory-evoked potentials in each condition with the rest (control) condition. We also used a visual analogue scale to measure subject-reported vividness of imagery. Results We found the N33 component was significantly lower in the execution condition than in the rest condition (p