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Motor skill training without online visual feedback enhances feedforward control
Journal of Neurophysiology ( IF 2.1 ) Pub Date : 2021-09-15 , DOI: 10.1152/jn.00145.2021
Adi Raichin 1 , Anat Shkedy Rabani 1 , Lior Shmuelof 1, 2
Affiliation  

Motor skill learning involves improvement in feedforward control, the ability to execute a motor plan more reliably, and feedback control, the ability to adjust the motor plan on the fly. The dependence between these control components and the association between training conditions and their improvement have not been directly examined. This study characterizes the contribution of feedforward and feedback control components to motor skill learning using the Arc Pointing Task (APT), a drawing task that requires high motor acuity. In experiment 1, 3 groups of subjects were tested with online visual feedback before and after training with online visual feedback (OF group), with knowledge of performance feedback that was presented after movement completion (KP group), and with both online and KP feedback (KP+OF group). While the improvement of OF group was not different from the improvement of KP+OF group, comparison of the KP and KP+OF groups revealed an advantage to the KP group in the fast test speed, suggesting that training without online feedback leads to a greater improvement in feedforward control. In experiment 2, subject's improvement was examined using test probes for estimating feedback and feedforward control. Both KP+OF and KP groups showed improvement in feedforward and feedback conditions with a trend toward a greater improvement of the KP group. Our results suggest that online visual feedback suppresses improvement in feedforward control during motor skill learning.

中文翻译:

没有在线视觉反馈的运动技能训练增强了前馈控制

运动技能学习涉及前馈控制的改进,即更可靠地执行运动计划的能力,以及反馈控制,即动态调整运动计划的能力。这些控制组件之间的依赖性以及训练条件与其改进之间的关联尚未被直接检查。本研究使用弧指向任务 (APT) 描述了前馈和反馈控制组件对运动技能学习的贡献,这是一种需要高运动敏锐度的绘图任务。在实验 1 中,3 组受试者在训练前后分别接受了在线视觉反馈(OF 组)、动作完成后呈现的表现反馈知识(KP 组)以及在线和 KP 反馈的测试。 (KP+OF 组)。虽然 OF 组的改进与 KP+OF 组的改进没有区别,但比较 KP 组和 KP+OF 组显示出 KP 组在测试速度快方面的优势,这表明没有在线反馈的训练导致更大的改进前馈控制。在实验 2 中,使用用于估计反馈和前馈控制的测试探针检查对象的改进。KP+OF 和 KP 组都显示出前馈和反馈条件的改善,KP 组有更大改善的趋势。我们的结果表明,在线视觉反馈抑制了运动技能学习过程中前馈控制的改进。表明没有在线反馈的培训会导致前馈控制的更大改进。在实验 2 中,使用用于估计反馈和前馈控制的测试探针检查对象的改进。KP+OF 和 KP 组都显示出前馈和反馈条件的改善,KP 组有更大改善的趋势。我们的结果表明,在线视觉反馈抑制了运动技能学习过程中前馈控制的改进。表明没有在线反馈的培训会导致前馈控制的更大改进。在实验 2 中,使用用于估计反馈和前馈控制的测试探针检查对象的改进。KP+OF 和 KP 组都显示出前馈和反馈条件的改善,KP 组有更大改善的趋势。我们的结果表明,在线视觉反馈抑制了运动技能学习过程中前馈控制的改进。
更新日期:2021-09-16
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