电肌图学控制的假手腕提高了灵巧性,减少了补偿运动,而没有增加认知负载
Connor D Olsen1, Nathaniel R Olsen2, Eric S Stone3
1Department of Electrical Engineering, University of Utah, Salt Lake City, USA. connor.olsen@utah.edu.
Scientific reports
|October 6, 2024
概括
动力假肢手腕显著提高了任务性能,并减少了跨辐射截肢者的补偿运动. 这种增强的灵巧性不需要显著增加认知负载,有助于未来的上肢假体开发.
科学领域:
- 生物医学工程 生物医学工程
- 康复科学 康复科学 康复科学
- 假肢和整形手术
背景情况:
- 恢复手腕功能对于跨辐射截肢者的日常活动至关重要.
- 动力假肢对功能,生物力学和认知的影响仍然不完全理解.
研究的目的:
- 量化肌电假肢手腕对任务执行,补偿运动和跨辐射截肢者的认知负载的影响.
- 为了评估一个新的,廉价的"犹他手腕"用于研究和商业动力手腕.
主要方法:
- 三名跨辐射截肢者使用肌电假肢进行了经过修改的衣索转移任务,无论是带有电动手腕还是没有电动手腕.
- 测量了任务失败率,补偿性身体运动 (向前倾斜,向左曲) 和认知负载 (NASA-TLX,次要任务).
主要成果:
- 在犹他手腕 (66%到39%) 和商业手腕中,任务失败显著下降.
- 补偿性向前倾斜和向左曲的运动在两个假肢手腕时显著减少.
- 无论用电动假肢手腕,都没有观察到认知负载的显著增加.
结论:
- 功能性假肢手腕增强了灵敏度,并减少了跨辐射截肢者的补偿运动.
- 动力假肢手腕可以集成,而不会显著增加认知需求.
- 这些发现支持开发和处方假肢手腕,以改善上肢假肢的结果.
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