一个混合感觉反系统用于假肢手中的热感知警报和保护
Anran Xie1, Chen Li1, Chih-Hong Chou1,2
1Laboratory of NeuroRehabilitation Engineering, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China.
Frontiers in neuroscience
|April 23, 2024
概括
这项研究开发了一种假肢手,模仿人类的触摸和反射来防止热损伤. 截肢者可以自愿释放热物体,并受益于更快的生物吸收反射,以提高安全性.
科学领域:
- 机器人技术和生物电子技术
- 神经修复品是一种神经修复品.
- 生物医学工程 生物医学工程
背景情况:
- 具有嵌入纳米传感器和微电子的先进假肢手容易受到热损伤.
- 保护假肢完整性对于持续的功能至关重要.
- 模仿人类手对 nociceptive刺激的感觉运动控制是必不可少的.
研究的目的:
- 复制人手的感知 (疼痛) 感知和假肢手的自我保护反应.
- 为了使截肢者能够在警告时自愿释放热物体.
- 为了研究从热危险中强化释放的生物戒断反射.
主要方法:
- 开发了一种稳定状态温度预测算法,以减少传感器响应时间.
- 实施了一种混合感觉策略,通过皮肤电神经刺激进行感知温度警告.
- 采用了与神经形状肌肉控制的生物性戒断反射来反射地打开手.
- 测试了该系统与有能力的受试者和前臂截肢者在不同温度下抓住物体.
主要成果:
- 温度预测算法显示平均误差为8.30 ± 6.00%.
- 研究对象在感知力 (86.90%) 和感知警报 (94.30%) 中取得了很高的成功率.
- 生物性戒断反射显著减少了反应时间 (1.39s vs 1.93s),证明了有效的闭环控制.
结论:
- 截肢者恢复感觉运动能力,警告并对热感知刺激做出反应.
- 证明了自愿释放和撤回反射可以增强热保护.
- 需要进一步的研究,以整合自愿和反射功能的日常生活活动.
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