Analgesic Neural Circuits Are Activated by Electroacupuncture at Two Sets of Acupoints

Figure 3

Analgesic effects induced by EA in goats (mean ± SD, %, ). The pain thresholds were measured with potassium iontophoresis. EA significantly increased pain threshold. The values with different letters differ significantly (). The blank control refers to the group in which the goats were restrained as the EA-treated goats without needling and electric stimulation. The sham control refers to the group in which needles were inserted into Baihui and Santai acupoints of the goats without electric stimulation.