Focal Vibration Alters Human Digital Sensory Nerve Action Potentials: A Pilot Study.

ABSTRACT:

Introduction

We studied the impact of vibratory stimulation on the electrophysiological features of digital sensory nerve action potential (SNAP).

Methods

The antidromic digit 3 SNAP was recorded in 19 healthy adults before, during, and after applying a vibration to either 3rd or 5th metacarpal phalangeal joint (MCPJ) at 60 Hz and amplitude of 2 mm. 100% supramaximal stimulus intensity was performed in 5 subjects (randomly selected from the 19 subjects) where the SNAP sizes were recorded.

Results

The amplitude of digit 3 SNAP declined to 58.9 ± 8.6% when a vibration was applied to MCPJ digit 3. These impacts did not change by increasing the electrical stimulus intensity. The SNAP regained its baseline value immediately after the cessation of vibration stimulation. The

SUBMITTER: Zhu DQ 

PROVIDER: S-EPMC7949868 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature