Haptic Feedback Based on Movement Smoothness Improves Performance in a Perceptual-Motor Task
Haptic Feedback Based on Movement Smoothness Improves Performance in a Perceptual-Motor Task
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基于运动平滑度的触觉反馈可提高感知运动任务的性能
DOI：
10.1109/toh.2021.3126017
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发表时间：
2022
影响因子：
2.9
通讯作者：
O'Malley, Marcia K.
中科院分区：
文献类型：
--
作者：
Sullivan, Jennifer L.;Pandey, Shivam;Byrne, Michael D.;O'Malley, Marcia K.
在许多培训场景中，特别是在手术中，在任务执行后向受训者提供反馈，并且评估通常是定性的。在本文中，我们展示了通过振动触觉提示传达的实时客观性能反馈的效果。受试者执行的镜像追踪任务需要协调性和灵活性，与血管内手术所需的协调性和灵活性相似。运动平滑度是与熟练和协调运动相关的特征，通过频谱弧长（平滑度的频域测量）来测量。基于平滑度的性能指标被编码为一个振动触觉提示显示在用户的arm.Performance上的镜子跟踪任务与基于平滑度的反馈进行了比较，以位置为基础的反馈（当他们移动到路径边界之外时，受试者被提醒）和一个没有振动触觉反馈控制条件。接受基于平滑度反馈的受试者改变了他们的任务完成策略，导致任务完成时间更快，但他们的准确性总体上略差于其他两组。在诸如血管内外科手术之类的手术中，可以利用基于平滑度的反馈训练来实现的手术时间的减少可能是有利的，尽管事实上准确度不如在没有反馈或基于位置的反馈的情况下观察到的准确度。
In many training scenarios, and in surgery in particular, feedback is provided to the trainee after the task has been performed, and the assessment is often qualitative in nature. In this paper, we demonstrate the effect of real-time objective performance feedback conveyed through a vibrotactile cue. Subjects performed a mirror-tracing task that requires coordination and dexterity similar in nature to that required in endovascular surgery. Movement smoothness, a characteristic associated with skilled and coordinated movement, was measured by spectral arc length, a frequency-domain measure of smoothness. The smoothness-based performance metric was encoded as a vibrotactile cue displayed on the user's arm. Performance on the mirror tracing task with smoothness-based feedback was compared to position-based feedback (where the subject was alerted when they moved outside the path boundary) and to a no vibrotactile feedback control condition. Subjects receiving smoothness-based feedback altered their task completion strategies, resulting in faster task completion times, but their accuracy was slightly worse overall than the other two groups. In procedures such as endovascular surgery, the reduction of procedure time that could be achieved with smoothness-based feedback training may be advantageous, despite the fact that accuracy was inferior to that observed with no feedback or position-based feedback.
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