高密度肌电图的多天可靠性,用于对辅助设备的持续控制
概括
高密度表面电肌图 (HD-sEMG) 在多天内显示了辅助设备的可靠控制信号. 这种方法可以在中风后实现独立的手部功能辅助,而无需每天重新校准.
科学领域:
- 生物医学工程 生物医学工程
- 神经康复疗法 神经康复疗法
- 人与计算机的交互
背景情况:
- 脑卒中后的慢性手部缺陷严重影响日常任务和生活质量.
- 辅助设备提供潜在的好处,但需要精确的用户输入进行复杂的控制.
- 高密度表面电肌图 (HD-sEMG) 是一个有前途的输入方法,但面临的挑战是日复一日的信号变化.
研究的目的:
- 评估高密度表面电肌图 (HD-sEMG) 控制信号的多天可靠性.
- 为了确定基于HD-sEMG的模型是否可以在单独的会话中一致预测用户的力输出.
- 评估使用HD-sEMG在无需频繁重新校准的辅助设备中进行用户输入的可行性.
主要方法:
- 八个神经类型的受试者执行了对称指纹曲和延伸任务.
- 高密度表面电肌图 (HD-sEMG) 数据 (192个通道) 和指尖力被记录在三个会议.
- 从第1次会议的数据开发出了与发动机单元火速与力相关的模型,并应用于第2次和第3次会议.
主要成果:
- 从HD-sEMG预测指尖力的模型显示,在不同会话中,错误率略有增加.
- 平均预测误差为11.2%的MVP (会议1),14.4%的MVP (会议2) 和14.6%的MVP (会议3).
- 曲方向显示,在后期的会议中,模型适合错误的增加显著,但很小.
结论:
- 基于HD-sEMG的发动机单元点火模型显示了可接受的多天可靠性,用于控制辅助设备.
- 这种方法可以允许在没有每日重新校准的情况下为手功能辅助提供一致的用户输入.
- 这些发现支持HD-sEMG的临床相关性,使得HD-sEMG能够独立协助改善中风后个体的手部功能.
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