使用极端学习进行适应性稀疏表示的电极转移宽容的微电运动模式分类
Joseph L Betthauser1, Luke E Osborn2, Rahul R Kaliki2,3
1Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA.
概括
一种新的自适应分类方法改善了假肢的肌电控制,即使有电极移位. 这一进步通过克服现实世界的信号变化,提高了截肢者对假肢的可用性和采用性.
科学领域:
- 生物医学工程 生物医学工程
- 康复工程 康复工程
- 信号处理 信号处理
背景情况:
- 肌电控制信号对于假肢激活至关重要.
- 在现实世界中,假肢的使用引入了信号变化,降低了分类器的性能,导致遗弃.
- 现有的方法在肌电模式的不可预测变化中扎.
研究的目的:
- 评估一种基于稀疏度的适应性分类方法,用于肌电假肢控制.
- 为了证明该方法对电极阵列移动和不对齐的耐受性.
- 在各种条件下显示显著的性能改进与传统方法相比.
主要方法:
- 使用基于稀疏性的自适应分类算法.
- 测试了该方法对电极接触阵列移动和不对齐的稳定性.
- 在未经训练的电极位置使用截肢者和有能力的受试者评估性能.
主要成果:
- 适应性分类方法对电极阵列移动和不对齐有显著的耐受性.
- 与传统的肌电模式识别技术相比,观察到性能改善.
- 该方法在各种现实条件空间中被证明是可靠的,包括未经训练的肢体位置和假肢负荷.
结论:
- 单一的,统一的自适应分类方法可以有效地处理各种真实世界的肌电信号变化.
- 这种强有力的方法很可能被临床医生采用,提高了假肢的实用性和用户采用.
- 加强肌电控制可以为截肢患者带来更好的结果.
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