Recognition of Fine Textures Using Friction and EEG Methods

IF 1.6 Q4 ENGINEERING, BIOMEDICAL
Shousheng Zhang, Wei Tang
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引用次数: 0

Abstract

Tactile perception is essential for humans to recognise objects. This study systematically investigated the tribological behaviour of the finger and physiological response of the brain related to the width recognition of tactile perception using subjective evaluation, friction and electroencephalography methods. The results show that the texture feeling, recognition accuracy of the texture and proportion of deformation friction increased with the texture width. The average width recognition threshold of the fine texture was 45.4 μm. The load index, maximum amplitude of the vibration signal, entropy, longest vertical line and P300 amplitude were positively correlated with the texture width. P300 latency was negatively correlated with the texture width. When the texture width exceeded the width recognition thresholds of tactile perception, the main frequency of the vibration signals increased to the optimal perceptual range of the Pacinian corpuscle. The nonlinear features of the vibration signal increased, and the vibration system transitioned from a homogenous state to a disrupted state. Moreover, the activation intensity and area of the brain and the speed of tactile recognition increased. The study demonstrated that the mechanical stimuli of friction and vibration generated in the touching of fine textures having various widths affected the subjective evaluation and brain response.

Abstract Image

使用摩擦和脑电图方法识别细微纹理
触觉对于人类识别物体至关重要。本研究采用主观评价法、摩擦法和脑电图法,系统研究了手指的摩擦学行为和大脑与触觉宽度识别相关的生理反应。结果表明,纹理感觉、纹理识别准确率和变形摩擦比例随纹理宽度的增加而增加。精细纹理的平均宽度识别阈值为 45.4 μm。负荷指数、振动信号最大振幅、熵、最长垂直线和 P300 振幅与纹理宽度呈正相关。P300 潜伏期与纹理宽度呈负相关。当纹理宽度超过触觉的宽度识别阈值时,振动信号的主频增加到帕氏体的最佳感知范围。振动信号的非线性特征增加,振动系统从均匀状态过渡到紊乱状态。此外,大脑的激活强度和面积以及触觉识别速度都有所增加。研究表明,在触摸不同宽度的精细纹理时产生的摩擦和振动机械刺激影响了主观评价和大脑反应。
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来源期刊
Biosurface and Biotribology
Biosurface and Biotribology Engineering-Mechanical Engineering
CiteScore
1.70
自引率
0.00%
发文量
27
审稿时长
11 weeks
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