通过具有视觉和触觉感官反的生物现实手假肢来进行闭环力控制
概括
这项研究验证了一种虚拟训练平台,用于控制假肢手. 唤起触觉 (ETS) 反增强了抓力控制,特别是在没有视觉输入的情况下,帮助截肢者.
科学领域:
- * 生物医学工程 * 生物医学工程
- * 神经假肢制品可以使用.
- * 人与计算机的交互
背景情况:
- * 开发先进的假肢手需要改进的人与假肢的交互和神经兼容性.
- *有效的抓力控制对于功能性假肢使用至关重要.
- * 了解感官反的作用是优化假肢控制的关键.
研究的目的:
- * 验证一个虚拟培训平台,为截肢者使用一种生物现实的假肢手.
- * 评估视觉和唤起触觉 (ETS) 反在掌握力控制任务中的贡献.
- * 评估传感信息的整合,以改善截肢者的运动性能.
主要方法:
- * 在MuJoCo环境中创建了一个肌驱动假肢手的数字双胞胎.
- * 生物现实控制器使用截肢者的表面电肌图 (sEMG) 信号来模拟肌肉激活.
- * 六名前臂截肢者在不同的视觉和ETS反条件下执行了强力追踪和握力任务.
主要成果:
- *在部队跟踪和持有任务中,视觉反比ETS反更为主导.
- *在没有视觉反的情况下,ETS反显著改善了在强力持有任务中的运动性能.
- * 感官反集成是个体特定的,但截肢者表现出良好的感官运动性能.
结论:
- * 唤起触觉 (ETS) 反提供可靠的感觉信息,用于在假肢手中稳定控制握力.
- * 虚拟培训平台可以帮助截肢者适应生物现实的手控制器和ETS反.
- *这些发现支持开发具有集成感官反系统的先进神经假肢.
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