Figure 1.

Effect of electroacupuncture on pain threshold and visceromotor response. (A) Rats in electro acupuncture (EA) group and non-handled control (NH) group had significantly higher pain threshold pressures in response to colorectal balloon distension than those in sham acupuncture (SA) group. (B) Rats in SA group had significantly higher mean area under curve values compared to those in EA and NH group at all distension pressures. MS, maternal separation. Data were presented as mean ± SEM. Two-tailed p-values were determined by one-way ANOVA. ^*p < 0.001, ^**p < 0.01 for post hoc comparisons of SA to EA and NH group. ^***p < 0.05 for post hoc comparisons between EA and NH group using Bonferroni correction.