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Effects of Short-Term Mental Imagery and Supplemental Visual Feedback on Muscle Coordination in a Myoelectric Task.
Journal of Motor Behavior ( IF 1.4 ) Pub Date : 2020-02-10 , DOI: 10.1080/00222895.2020.1723482
Shanie A L Jayasinghe 1 , Rajiv Ranganathan 1, 2
Affiliation  

Abstract

Changing muscle coordination patterns is a critical part of motor learning – yet there is a lack of simple, clinically feasible techniques to alter these patterns. Here, we investigated the effects of short-term mental imagery and supplemental visual feedback on muscle coordination using a myoelectric reaching task with complex mapping of arm and hand muscles to cursor position. Forty participants were divided into four groups, and practiced this task over 180 trials. During a short intervention period, the controls rested, the task- and muscle-imagery groups were given specific instructions meant to simplify the task, and the supplemental feedback group was provided extra visual information of muscle-to-cursor mapping. Results showed that there were no changes in task performance between groups. However, we found that in terms of muscle coordination, the supplemental visual feedback group showed the most efficient coordination. Furthermore, across all groups, individuals with greater efficiency and exploration showed better task performance at the end of practice. The results from this pilot study point to a greater need for understanding strategies for changing muscle coordination, which could be applicable in a rehabilitation setting.



中文翻译:

短期心理意象和补充视觉反馈对肌电任务中肌肉协调的影响。

摘要

改变肌肉的协调方式是运动学习的关键部分,但缺乏简单,临床上可行的技术来改变这些方式。在这里,我们研究了使用肌电到达任务并将手臂和手部肌肉复杂映射到光标位置的短期心理意象和补充视觉反馈对肌肉协调的影响。40名参与者分为四组,并在180个试验中练习了该任务。在短暂的干预期内,控制者休息了,为任务和肌肉图像组提供了专门的指令以简化任务,为补充反馈组提供了肌肉到光标映射的额外视觉信息。结果表明,各组之间的任务绩效没有变化。然而,我们发现,就肌肉协调而言,补充视觉反馈组显示出最有效的协调。此外,在所有群体中,效率更高,探索力更强的人在练习结束时表现出更好的任务表现。这项初步研究的结果表明,人们更需要了解改变肌肉协调性的策略,这些策略可能适用于康复环境。

更新日期:2020-02-10
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