Fig. 1

Effect of different frequencies of electroacupuncture stimulation (EAS) of Zusanli (ST36) and Yanglingquan (GB34) on difference values of the bilateral hindpaw withdrawal latencies (PWLDs, mechanical pain threshold) in neuropathic pain rats (mean ± SD, g, n = 8 in each group); NOR normal group, Model group: CCI (chronic compressive injury), CCI + 2 Hz EAS group: 2 Hz EA, CCI + 2/15 Hz EAS group: 2/15 Hz EA, CCI + 100 Hz EAS group: 100 Hz EA (the same in Figs. 2, 3); *P < 0.05, vs the normal group; ^#P < 0.05, vs the model group; ^∆P < 0.05, vs the 100 Hz EAS group