Complementarity between the Feedforward and Feedback Mechanisms is Necessary for Anticipatory Activity in Hand Tracking
Complementarity between the Feedforward and Feedback Mechanisms is Necessary for Anticipatory Activity in Hand Tracking
复制标题
前馈和反馈机制之间的互补性对于手工跟踪中的预期活动是必需的
DOI：
10.1109/icawst.2013.6765455
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Y.
中科院分区：
文献类型：
--
作者：
Ishida;F.;Sawada;Y.
在人类和动物的感觉-运动控制系统中观察到由特征预测机制引起的预期活动。预期活动的定量特征已被报道的手优先从目标的数量与各种条件的任务，涉及跟踪和同步的视觉和听觉目标。然而，预期活动的机制还没有被详细研究。在本研究中，数值模拟进行了手跟踪模型，表现出预期的活动，重点是前馈和反馈控制元件之间的关系。根据是否显示视觉目标，分别向前馈控制元件和反馈控制元件引入节奏分量和开-关机构。当前馈控制的操作较弱时，反馈控制被激活时，观察到手部运动的预期活动。此外，手的运动被延迟时，反馈控制被激活与更强的前馈控制的操作。这表明，在感觉运动控制系统中，前馈和反馈控制是互补的，而不是同时进行的。
Anticipatory activity arising from characteristic predictive mechanisms is observed in human and animal sensory-motor control systems. The quantitative features of anticipatory activity have been reported in terms of the amount of hand precedence from the target with various conditions in tasks that involve tracking and synchronizing a visual and auditory target. However, the mechanism of anticipatory activity has not been investigated in detail. In the present study, numerical simulations were performed with a hand-tracking model that exhibited anticipatory activity with a focus on the relationship between feedforward and feedback control elements. Rhythmic components and an on-off mechanism were introduced to the feedforward control element and the feedback control element, respectively, depending on whether or not the visual target was displayed. Anticipatory activity of hand-motion was observed when feedback control was activated with weaker operation of feedforward control. In addition, hand motion was delayed when feedback control was activated with stronger operation of feedforward control. This suggests that in sensory-motor control systems, feedforward and feedback control work complementarity rather than simultaneously.