Effect of Dyadic Haptic Collaboration on Ankle Motor Learning and Task Performance
Effect of Dyadic Haptic Collaboration on Ankle Motor Learning and Task Performance
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DOI：
10.1109/tnsre.2022.3225759
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发表时间：
2023-01-01
影响因子：
4.9
通讯作者：
Pons，Jose L. L.
中科院分区：
文献类型：
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作者：
Kim，Sangjoon J. J.;Wen，Yue;Pons，Jose L. L.
在过去的几十年里，在新的运动任务中优化技能获取和恢复失去的运动功能一直是许多研究人员的兴趣。一种加速运动学习的方法涉及通过机器人界面以触觉方式耦合两个人。研究表明，与伙伴进行触觉耦合训练后，个人在上肢跟踪任务中的独奏表现可能会有所提高。在这项研究中，我们的目标是调查这些发现是否可以转化为下肢运动任务，更具体地说，在脚踝位置跟踪任务期间。使用单自由度脚踝运动，成对的参与者（即二人组）独立跟踪目标轨迹。参与者在有或没有触觉耦合的跟踪试验之间交替进行，这是通过在两个脚踝康复机器人之间渲染虚拟弹簧来实现的。在我们的分析中，我们比较了有和没有触觉耦合训练时各个试验中任务表现的变化。在触觉耦合过程中，两个人的跟踪性能（即二元任务性能）都有所提高，这可能是由于跟踪过程中二元对的随机误差的平均所致。然而，我们发现二元触觉耦合并没有导致跟踪任务的个体学习速度更快。这些结果表明，在简单的单自由度任务中，未受损个体之间的触觉耦合可能不是训练踝关节运动的有效方法。
Optimizing skill acquisition during novel motor tasks and regaining lost motor functions have been the interest of many researchers over the past few decades. One approach shown to accelerate motor learning involves haptically coupling two individuals through robotic interfaces. Studies have shown that an individual’s solo performance during upper-limb tracking tasks may improve after haptically-coupled training with a partner. In this study, our goal was to investigate whether these findings can be translated to lower-limb motor tasks, more specifically, during an ankle position tracking task. Using one-degree-of-freedom ankle movements, pairs of participants (i.e., dyads) tracked target trajectories independently. Participants alternated between tracking trials with and without haptic coupling, achieved by rendering a virtual spring between two ankle rehabilitation robots. In our analysis, we compared changes in task performance across trials while training with and without haptic coupling. The tracking performance of both individuals (i.e., dyadic task performance) improved during haptic coupling, which was likely due to averaging of random errors of the dyadic pair during tracking. However, we found that dyadic haptic coupling did not lead to faster individual learning for the tracking task. These results suggest that haptic coupling between unimpaired individuals may not be an effective method of training ankle movements during a simple, one-degree-of-freedom task.