混合感官反系统的实验评估,用于手假肢中的触觉和触觉感知和触觉感知
Emre Sariyildiz1, Fergus Hanss2, Hao Zhou1
1School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
Sensors (Basel, Switzerland)
|October 28, 2023
概括
这项研究引入了假肢手的混合感官反系统,通过触觉和自身感知反来增强对象识别和用户体验. 该系统有效地传达握握位置和物体属性,改善假肢功能.
科学领域:
- 生物医学工程 生物医学工程
- 康复技术 康复技术 康复技术
- 人与计算机的交互
背景情况:
- 假肢手往往缺乏感官反,限制了用户与物体互动的能力.
- 现有的反系统可能无法完全复制自然感官体验.
- 无视觉对象识别是假肢使用者面临的重大挑战.
研究的目的:
- 开发和评估一种用于假肢手的新型混合多模式感官反系统.
- 评估系统提供触觉和自身感知反的能力.
- 确定系统在促进无视对象识别方面的有效性.
主要方法:
- 开发了一个混合系统,结合了机械触觉 (力) 和振动触觉 (抓地位置) 的反.
- 力量控制允许按比例应用握力.
- 三个实验评估了触觉感知,自感反准确度和对象识别,共有32名参与者.
主要成果:
- 参与者的力量感知精度随着施加力的增加而下降.
- 双脚在放松状态下的位置为触觉反提供了最高的准确性.
- 参与者准确地确定了所有四个假肢手握位置.
- 对象识别成功率很高 (90.5%),不受反位置或肌肉状态的影响.
结论:
- 混合反系统有效地传达抓地位置和物体属性 (形状,刚性).
- 该系统有可能显著提高人工手的用户体验.
- 进一步的研究可以优化反参数,以改善假肢控制和实施方式.
相关概念视频
01:33Somatosensation
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
01:27Tactile and Chemical Senses
Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex. This...