Kinesthetic illusory feeling induced by a finger movement movie effects on corticomotor excitability
Kinesthetic illusory feeling induced by a finger movement movie effects on corticomotor excitability
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DOI：
10.1016/j.neuroscience.2007.07.028
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发表时间：
2007-11-23
期刊：
影响因子：
3.3
通讯作者：
Kizuka, T.
中科院分区：
文献类型：
--
作者：
Kaneko, F.;Yasojima, T.;Kizuka, T.
本研究的目的是澄清是否动觉错觉出现在我们的实验条件（视觉刺激），以及是否corticomotor兴奋性的变化与动觉错觉平行。视觉刺激是一部电影，其中有人的肢体正在移动。放映电影的电脑屏幕安装在受试者前臂的适当部位，这样表演者的手看起来就像是受试者的手（错觉）。在此条件下的动觉错觉的经验进行了验证，通过访谈使用视觉模拟量表。健康的男性受试者参加了这项实验。经颅磁刺激诱发第一背侧骨间肌和小指展肌运动诱发电位（MEP）。每个受试者被指示观看与错觉中所示相同的计算机显示器，他自己的静止的手在全视图中（非错觉），并观看非生物运动（移动文本）的显示（假）作为控制条件。目前的结果表明，MEP的显着促进下的错觉相比，控制条件下的食指外展在电影中，虽然没有内收。小指外展肌MEP在小指外展或内收过程中均无变化。本研究表明，一个幻想的自我运动可以创建一个视频的移动抽象的食指，和输入到corticomotor通路在自我运动的错觉促进corticomotor兴奋性。幻觉的兴奋效果取决于食指的运动方向。(c)2007年IBRO。由爱思唯尔有限公司出版。保留所有权利。
The present study aimed to clarify whether a kinesthetic illusion arises in our experimental condition (visual stimulus) and whether corticomotor excitability changes in parallel with the kinesthetic illusion. The visual stimulus was a movie in which someone else's limb was being moved. The computer screen showing the movie was installed at an appropriate portion of the subject's forearm, so that the performer's hand appeared as if it were the subject's hand (illusion). The experience of kinesthetic illusion under this condition was verified by interview using a visual analog scale. Healthy male subjects participated in this experiment. Transcranial magnetic stimulation was applied to induce motorevoked potential (MEP) from the first dorsal interosseous and abductor digiti minimi muscle. Each subject was instructed to watch the same computer display shown as in the illusion, with his own stationary hand in full view (non-illusion) and to watch a display of non-biological movement (moving text) (sham) as the control conditions. The present results showed significant facilitation of MEP under the illusion compared with the control conditions for the index finger abducting in the movie, although not for adducting. MEP in the abductor digiti minimi showed no change during either abduction or adduction of the little finger. The present study demonstrated that an illusion of self-motion can be created by a video of a moving abstract index finger, and inputs to the corticomotor pathways during the self-motion illusion facilitated the corticomotor excitability. The excitatory effect of the illusion depended on the movement direction of the index finger. (c) 2007 IBRO. Published by Elsevier Ltd. All rights reserved.