通过深压实现本体感觉的可穿戴感觉替代
Wearable Sensory Substitution for Proprioception via Deep Pressure
AI总结:
本文设计可穿戴深压刺激原型,将单自由度本体感觉信息编码到前臂压力中,并通过虚拟手臂角度匹配实验验证其可显著降低定位误差。
摘要:
我们提出了一种感觉替代设备,通过手臂上的深压刺激来传递单自由度本体感觉反馈。该设计的动机在于,需要一种可被患有名为 PIEZO2 功能丧失的遗传病的个体检测到的反馈模态,这种疾病的特征是本体感觉和轻触觉均缺失。我们制作了一个可穿戴、可编程的原型,可向前臂施加最高 15 N 的深压刺激,并包含一个嵌入式力传感器。我们开展了一项研究,以评估无感觉障碍参与者控制虚拟手臂位置、使其匹配由深压刺激传递的目标角度的能力。参与者特异性校准得到平均最小可检测力为 0.41 N,最大舒适力为 6.42 N。我们发现,经过训练后,与没有深压触觉反馈相比,参与者能够使用该反馈显著降低角度误差。角度误差仅随力轻微增加,表明这种感觉替代方法对于 PIEZO2 功能丧失个体和其他形式感觉丧失者是一种很有前景的途径。
英文摘要:
We propose a sensory substitution device that communicates one-degree-of-freedom proprioceptive feedback via deep pressure stimulation on the arm. The design is motivated by the need for a feedback modality detectable by individuals with a genetic condition known as PIEZO2 loss of function, which is characterized by absence of both proprioception and sense of light touch. We created a wearable and programmable prototype that applies up to 15 N of deep pressure stimulation to the forearm and includes an embedded force sensor. We conducted a study to evaluate the ability of participants without sensory impairment to control the position of a virtual arm to match a target angle communicated by deep pressure stimulation. A participant-specific calibration resulted in an average minimum detectable force of 0.41 N and maximum comfortable force of 6.42 N. We found that, after training, participants were able to significantly reduce angle error using the deep pressure haptic feedback compared to without it. Angle error increased only slightly with force, indicating that this sensory substitution method is a promising approach for individuals with PIEZO2 loss of function and other forms of sensory loss.
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