Fooling the brain into thinking it sees both hands moving enhances bimanual spatial coupling
Fooling the brain into thinking it sees both hands moving enhances bimanual spatial coupling
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DOI：
10.1007/s00221-004-1831-3
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发表时间：
2004-07-01
影响因子：
2
通讯作者：
Packman, T
中科院分区：
文献类型：
--
作者：
Franz, EA;Packman, T
本研究探讨了一只手的运动的镜像反射直接影响运动输出的另一只手（隐藏），在双手绘画性能的假设。在双手画圈时，一面镜子被放在两只手之间，一只手和它的反射可见，另一只手隐藏起来。双手空间耦合增强的镜面反射，所示的措施，圆的大小。镜面反射的效果显着不同的视觉效果，单手，但没有不同的控制任务中进行全视觉。没有证据表明可见手的一致相位领先，这表明所观察到的对空间耦合的影响是即时的，而不是基于耗时的反馈过程。我们认为，视觉镜像对称会欺骗大脑，让它相信自己看到的是双手而不是一只手。因此，通过几乎自动的过程，双手运动的空间特性变得更加相似。
This study examined the hypothesis that the mirror reflection of one hand's movement directly influences motor output of the other (hidden) hand, during performance of bimanual drawing. A mirror was placed between the two hands during bimanual circle drawing, with one hand and its reflection visible and the other hand hidden. Bimanual spatial coupling was enhanced by the mirror reflection, as shown by measures of circle size. Effects of the mirror reflection differed significantly from effects of vision to one hand alone, but did not differ from a control task performed in full vision. There was no evidence of a consistent phase lead of the visible hand, which indicates that the observed effects on spatial coupling were immediate and not based on time-consuming feedback processes. We argue that visual mirror symmetry fools the brain into believing it sees both hands moving rather than one. Consequently, the spatial properties of movement of the two hands become more similar through a process that is virtually automatic.