Human hand moves proactively to the external stimulus: An evolutional strategy for minimizing transient error
Human hand moves proactively to the external stimulus: An evolutional strategy for minimizing transient error
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DOI：
10.1103/physrevlett.93.168105
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发表时间：
2004-10-15
影响因子：
8.6
通讯作者：
Sawada, YE
中科院分区：
文献类型：
--
作者：
Ishida, F;Sawada, YE
我们通过手部跟踪任务的稳定和瞬态实验特别研究了视觉运动系统的主动性质，并证实在正弦目标运动的有限频率范围内稳定运行时，手部运动平均领先于目标运动。跳频实验回答了为什么手部动作应该先行以及先行多少的问题。结果表明，手部运动的正相移代表了视觉运动控制系统的主动性质，该系统是针对每个人适应性开发的，以在目标运动意外变化时最小化手部运动的瞬态误差。
We investigated particularly the proactive nature of the visual-motor system by steady and transient experiments of a hand-tracking task, and confirmed that the hand motion precedes on the average the target motion in steady runs within a finite frequency range of the sinusoidal target motion. The question why and how much the hand motion should precede was answered by frequency-jump experiments. The results implied that the positive phase shift of the hand motion represents the proactive nature of the visual-motor control system which is adaptationally developed for each person to minimize the transient error of the hand motion when the target motion changes unexpectedly.