Effects of cooling on the amplitude of vibration-induced sensory nerve action potentials
10.3760/cma.j.issn.0254-1424.2024.02.009
- VernacularTitle:冷却对振动引起的人手指感觉神经动作电位波幅的影响
- Author:
Fang LIU
1
;
Dongqing ZHU
;
Ming ZENG
;
Meifang SHI
;
Yu ZHU
;
Xudong GU
Author Information
1. 嘉兴学院附属第二医院康复医学科，嘉兴 314000
- Keywords:
Vibration;
Cooling;
Sensory nerves;
Action potentials;
Mechanoreceptors
- From:
Chinese Journal of Physical Medicine and Rehabilitation
2024;46(2):145-149
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To observe any effect of cooling on the amplitude of vibration-induced sensory nerve action potentials (SNAPs) in human digits.Methods:The middle fingers of 15 healthy adults were either cooled to about 22℃ using an ice pack or kept at about 32℃. A vibrator was applied to the joint connecting the middle finger and the palm vibrating with an amplitude of 2mm at a frequency of 60Hz. The amplitudes of middle finger SNAPs before, during and right after the vibration were recorded.Results:The SNAP amplitude at a given temperature was lower during vibration than before it, but it immediately returned to the pre-vibration level after the vibration ceased. The middle finger SNAP amplitudes at 22℃ were significantly higher than those at 32℃ throughout. The decrease in amplitude at 32℃ (61.7±15.1%) was significantly greater than that at 22℃ (24.1±7.0%).Conclusions:Cooling significantly reduces the effect of vibration on the amplitude of digital SNAPs. That suggests a way to protect the sensory nerves in hand-arm vibration syndrome.
