脑卒中后对手的意志控制增加了手指的硬度和对机器人辅助运动的抵抗力
Ava Chen1, Katelyn Lee1, Lauren Winterbottom2
1Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA.
概括
卒中幸存者在积极地试图移动他们的手时,会产生更大的手指硬. 这种增加的肌肉度,由于自愿的努力,影响辅助器件控制和康复战略的上肢功能.
科学领域:
- 神经科学是一个神经科学.
- 康复工程 康复工程
- 生物力学 生物力学
背景情况:
- 卒中后的个体往往表现出肌肉度增加和上肢的异常协同作用,使手部功能和辅助设备使用复杂化.
- 控制辅助设备的自愿努力可能会加剧这些运动障碍,给有效的康复和功能任务完成带来挑战.
研究的目的:
- 研究慢性中风幸存者在机器人辅助手部运动期间,意志力对手指硬的影响.
- 量化与被动伸展和持续炼相比,与积极用户参与相关的手指阻力变化.
主要方法:
- 在三名慢性中风幸存者身上进行了实验,他们使用EMG控制的机器人协助手部运动.
- 测量侧重于手指硬度的变化,在积极的,自愿的努力打开/关闭手与被动伸展.
- 持续活跃参与对肌肉度和耐力随时间推移的评价影响.
主要成果:
- 与被动伸展相比,上肢的积极参与显著增加了手指肌肉度.
- 随意的努力导致手指硬度的增加大于随着时间的推移持续的劳动.
- 结果表明,用户意图对电机输出和电阻有明显的影响.
结论:
- 活跃用户的努力大大提高了中风幸存者的手指性,比被动伸展或长时间的活动更重要.
- 辅助和康复设备的设计应考虑到在ipsilateral EMG控制的,用户驱动的操作过程中指纹硬度的增加.
- 了解努力诱导的性对于优化上肢辅助技术中风恢复的控制策略至关重要.
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