Factors that determine directional constraint in ipsilateral hand-foot coordinated movements.
Factors that determine directional constraint in ipsilateral hand-foot coordinated movements.
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DOI：
10.1002/phy2.108
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发表时间：
2013-10
影响因子：
2.5
通讯作者：
Kanosue, Kazuyuki
中科院分区：
文献类型：
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作者：
Nakagawa, Kento;Muraoka, Tetsuro;Kanosue, Kazuyuki
在进行同侧手和脚的同步节奏运动时，在同一方向（稳定）和相反方向（不稳定）运动的稳定性水平上存在差异。这是方向约束。在这项研究中，我们研究了三个因素（“传出过程中的相互作用”、“传入信号的相互作用”和“误差校正”），提出了方向约束的基础。我们比较了三个任务的表现：(1)主动移动的同侧手和脚的协调，(2)主动移动的手与被动移动的脚协调，(3)主动移动的手与被动移动的脚不协调。在每个任务中，同时执行相同和相反方向的运动。第一项任务和第二项任务的成功率之间没有差异。方向约束在两个任务中都出现了。因此，在双手协调中负责方向约束的传出过程的相互作用与同侧手脚协调的方向约束无关。第三个任务中没有出现方向约束，说明“传入信号的相互作用”也没有贡献。这些结果表明，“误差校正”一定是介导同侧手足协调运动方向约束的最关键因素。
In performing simultaneous rhythmic movements of the ipsilateral hand and foot, there are differences in the level of stability between same directional (stable) and opposite directional (unstable) movements. This is the directional constraint. In this study, we investigated three factors (“interaction in efferent process,” “interaction of afferent signals,” and “error correction”) proposed to underlie for the directional constraint. We compared the performance of three tasks: (1) coordination of actively moved ipsilateral hand and foot, (2) active hand movement in coordination with passively moved foot, (3) active hand movement not coordinated with a passively moved foot. In each task, both same and opposite directional movements were executed. There was no difference between performance estimated with success rate for the first and second task. The directional constraint appeared in both tasks. Thus, the interaction in efferent processes, which was shown to be responsible for the directional constraint in bimanual coordination, was not involved with the directional constraint of ipsilateral hand–foot coordination. The directional constraint did not appear in the third task, which suggested that “interaction of afferent signals” also had no contribution. These results indicated that “error correction” must be the most critical of these factors for mediating the directional constraint in ipsilateral hand–foot coordinated movements.