Sensory gating and suppression of subjective peripheral sensations during voluntary muscle contraction

BMC Neuroscience

Sho Onodera¹  Kazutoshi Seki²  Hidetaka Yamaguchi³  Terumasa Takahara³ 

[1] Department of Health and Sports Science, Kawasaki University of Medical Welfare, 288 Matsushima, 701-0193, Kurashiki, Okayama, Japan;Department of Human Health and Wellbeing, University of Marketing and Distribution Science, Kobe. 3-1 Gakuen-Nishimachi, Nishi-ku, 651-2188, Kobe, Hyogo, Japan;Department of Sport Social Management, KIBI International University, 8 Igamachi, 716-8508, Takahashi, Okayama, Japan;

关键词: Subjective peripheral sensation;    F-wave;    Somatosensory evoked potential;    Muscle contraction;   

DOI  :  10.1186/s12868-020-00592-2

来源: Springer

【 摘 要 】

BackgroundDuring voluntary muscle contraction, sensory information induced by electrostimulation of the nerves supplying the contracting muscle is inhibited and the somatosensory evoked potentials (SEPs) amplitude decreases. This depression of sensory input during voluntary muscle contraction has been demonstrated by many studies using electrophysiological methods. However, the association between the electrophysiological response of the sensory system during sustained muscle contraction and subjective peripheral sensation (SPS) is still unclear. The aim of this study was to investigate changes in spinal excitability, SEPs, and SPS during voluntary muscle contraction.ResultsThe appearance rate of the F-wave was significantly higher during muscle contraction than rest, whereas no significant difference was observed in F-wave latency between muscle contraction and rest. Furthermore, the P25 amplitude of SEPs was significantly lower during muscle contraction than rest, whereas the N20 amplitude of SEPs exhibited no significant differences. The SPS was significantly lower during muscle contraction than restConclusionsWe conclude that sensory gating, which is found in the P25 component of SEPs during muscle contraction, is one of the neurophysiological mechanisms underlying the suppression of SPS.

【 授权许可】

CC BY