Effects of EA with different intensities at GB30 on EMG induced by 1.2Tc (Tc, C-fiber threshold) stimulation intensity.
Notes: (A) EMG induced by the C-fiber reflex was significantly decreased at 0 and 1 minute after EA at GB30 with a stimulation intensity of 0.8 Ta in CCIp (n=10) rats. EMG induced by the C-fiber reflex was significantly decreased at 0 minute after EA at GB30 with a stimulation intensity of 0.8 Ta in normal rats, but excited it at 4 minutes in normal rats (n=10) (*P<0.05, **P<0.01, two-way ANOVA). (B) EMG induced by the C-fiber reflex was significantly decreased at 0–4 minutes after EA at GB30 with a stimulation intensity of 1 Ta in CCIp rats. EMG induced by the C-fiber reflex was significantly decreased at 0 minute after EA at GB30 with a stimulation intensity of 1 Ta in normal rats (*P<0.05, **P<0.01, two-way ANOVA). At 3 and 4 minutes, EMG induced by the C-fiber reflex in CCIp rats was lower than that in normal rats (#
P<0.05, ##P<0.01, two-way ANOVA). (C) EMG induced by the C-fiber reflex was significantly decreased at 0–3 minutes after EA at GB30 with a stimulation intensity of 1 Tc in CCIp rats. EMG induced by the C-fiber reflex was significantly decreased at 0 and 1 minute after EA at GB30 with a stimulation intensity of 1 Tc in normal rats (*P<0.05, **P<0.01, two-way ANOVA). (D) EMG induced by the C-fiber reflex was significantly decreased at 1–4 minutes after EA at GB30 with a stimulation intensity of 2 Tc in CCIp rats. EMG induced by the C-fiber reflex was significantly decreased at 0–3 minutes after EA at GB30 with a stimulation intensity of 2 Tc in normal rats (*P<0.05, **P<0.01, two-way ANOVA).
Abbreviations: ANOVA, analysis of variance; CCIp, chronic constriction injury of the partial sciatic nerve; EA, electroacupuncture; EMG, electromyogram; Ta, Aδ fiber reflex threshold; Tc, C-fiber reflex threshold.