Effects of hand vibration on reflex behaviors and pain perception - a pilot study.
Int J Ind Ergon 1999 Mar; 23(5-6):629-632
This research investigated the effects of hand vibration on the protective reflex responses and perception of the stimulus intensity. Electrical pulses were applied to the wrist to elicit the reflex responses. Changes of the reflex response were measured using the surface electromyographic activities from the hand flexor muscles, and were analyzed as a function of vibration frequency and initial level of grip force. Psychophysical experiment was also performed to assess the effects of hand vibration on perception of the electrical stimulus. The reflex responses were stronger during vibration, and were more visible at lower vibration frequencies and higher muscle contraction level. During vibration, a poor correlation was found between the reflex responses and stimulus perception.
Hand-protection; Humans; Men; Women; Vibration; Vibration-effects; Vibration-exposure; Muscles; Musculoskeletal-system; Muscle-function; Physiological-function; Physiological-effects; Physiological-response; Reflexes; Hand-tools;
Author Keywords: Hand-tool vibration; Withdrawal reflex; EMG; Sensorimotor control; Perception
Hee-Sok Park, Department of Industrial Engineering, Hong-Ik University, Sangsu-Dong 72-1, Mapo-Ku, Seoul 121-791, South Korea
International Journal of Industrial Ergonomics
University of Michigan at Ann Arbor, Ann Arbor, MI