Acute Vibrotactile Threshold Shifts in Relation to Force and Hand-Arm Vibration

Proceedings

article

Shuxiang Gao¹  Ying Ye¹ 

[1] Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton

关键词: hand-arm vibration;    grip exertions;    vibrotactile perception;    temporary threshold shift;   

DOI  :  10.3390/proceedings2023086008

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Background: to investigate the acute effects of vibration and force level on vibrotactile perception following short-term exposure to hand-arm vibration (HAV). Methods: 12 individuals attended the test, and each of them completed a set of grasping tasks between 10 N and 80 N while being exposed to four intensities of HAV at 125 Hz, ranging from 5.5 to 44.0 m/s2 (unweighted), for three minutes. The vibrotactile perception threshold (VPT, at 125 Hz) on the fingertip was assessed before and after the exposure. Results: Vibration caused considerable reductions in VPT, and the higher the HAV amplitude, the more the VPT shifted. There were also noticeable VPT shifts brought on by the force increase, but the force increase from 40 N to 80 N could not make more of a difference at higher vibration levels. Conclusions: Vibrotactile perception was sensitive to the vibration level, and was affected by the applied hand force when the vibration intensity was modest. With high vibration levels, the further sensorineural response to the force is limited after the force reaches a certain level.

【 授权许可】

CC BY