Reducing Grip Uncertainty During Initial Prosthetic Hand Use Improves Eye-Hand Coordination and Lowers Mental Workload.

IF 1.1 4区 心理学 Q4 NEUROSCIENCES
Journal of Motor Behavior Pub Date : 2024-01-01 Epub Date: 2024-03-24 DOI:10.1080/00222895.2024.2328297
M O Mohamed, G Wood, D J Wright, J V V Parr
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引用次数: 0

Abstract

The reliance on vision to control a myoelectric prosthesis is cognitively burdensome and contributes to device abandonment. The feeling of uncertainty when gripping an object is thought to be the cause of this overreliance on vision in hand-related actions. We explored if experimentally reducing grip uncertainty alters the visuomotor control and mental workload experienced during initial prosthesis use. In a repeated measures design, twenty-one able-bodied participants took part in a pouring task across three conditions: (a) using their anatomical hand, (b) using a myoelectric prosthetic hand simulator, and (c) using a myoelectric prosthetic hand simulator with Velcro attached to reduce grip uncertainty. Performance, gaze behaviour (using mobile eye-tracking) and self-reported mental workload, was measured. Results showed that using a prosthesis (with or without Velcro) slowed task performance, impaired typical eye-hand coordination and increased mental workload compared to anatomic hand control. However, when using the prosthesis with Velcro, participants displayed better prosthesis control, more effective eye-hand coordination and reduced mental workload compared to when using the prosthesis without Velcro. These positive results indicate that reducing grip uncertainty could be a useful tool for encouraging more effective prosthesis control strategies in the early stages of prosthetic hand learning.

减少假手初次使用时的握力不确定性可改善眼手协调并减轻脑力劳动负担。
依赖视觉来控制肌电假肢是一种认知负担,也是导致放弃使用假肢的原因之一。抓握物体时的不确定感被认为是手部相关动作过度依赖视觉的原因。我们通过实验探讨了减少抓握不确定性是否会改变初次使用假肢时的视觉运动控制和脑力劳动负荷。在重复测量设计中,21 名健全参与者在三种条件下参加了倾倒任务:(a) 使用解剖手,(b) 使用肌电假手模拟器,(c) 使用贴有尼龙搭扣以减少握持不确定性的肌电假手模拟器。研究人员对实验表现、注视行为(使用移动眼动跟踪)和自我报告的心理工作量进行了测量。结果表明,与解剖手控制相比,使用假手(无论有无尼龙搭扣)会减慢任务执行速度,损害典型的眼手协调,并增加心理工作量。然而,与使用不带尼龙搭扣的假肢相比,使用带尼龙搭扣的假肢时,参与者表现出更好的假肢控制能力、更有效的眼手协调能力以及更低的脑力劳动负荷。这些积极的结果表明,在假手学习的早期阶段,减少抓握的不确定性可能是鼓励更有效的假手控制策略的有用工具。
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来源期刊
Journal of Motor Behavior
Journal of Motor Behavior 医学-神经科学
CiteScore
3.10
自引率
0.00%
发文量
39
审稿时长
>12 weeks
期刊介绍: The Journal of Motor Behavior, a multidisciplinary journal of movement neuroscience, publishes articles that contribute to a basic understanding of motor control. Articles from different disciplinary perspectives and levels of analysis are encouraged, including neurophysiological, biomechanical, electrophysiological, psychological, mathematical and physical, and clinical approaches. Applied studies are acceptable only to the extent that they provide a significant contribution to a basic issue in motor control. Of special interest to the journal are those articles that attempt to bridge insights from different disciplinary perspectives to infer processes underlying motor control. Those approaches may embrace postural, locomotive, and manipulative aspects of motor functions, as well as coordination of speech articulators and eye movements. Articles dealing with analytical techniques and mathematical modeling are welcome.
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