Complementarity between the feedforward and feedback mechanisms is necessary for anticipatory activity in hand tracking

炎黄地理 Pub Date : 2013-11-01 DOI:10.1109/icawst.2013.6765455

F. Ishida, Y. Sawada

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Abstract

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.

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前馈和反馈机制之间的互补性对于手部跟踪中的预期活动是必要的

在人类和动物的感觉-运动控制系统中，可以观察到由特征预测机制引起的预期活动。预期活动的数量特征已经被报道，在涉及跟踪和同步视觉和听觉目标的任务中，不同条件下目标的手优先量。然而，预期活动的机制尚未得到详细的研究。在本研究中，我们使用一个手跟踪模型进行了数值模拟，该模型展示了预期活动，重点关注前馈和反馈控制元素之间的关系。根据视觉目标是否显示，在前馈控制元件和反馈控制元件中分别引入节奏元件和开关机构。在前馈控制较弱的情况下，激活反馈控制时，观察到手部运动的预期活动。此外，在前馈控制作用较强的情况下，激活反馈控制会导致手部运动延迟。这表明在感觉-运动控制系统中，前馈和反馈控制是互补的，而不是同时起作用的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

炎黄地理

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784