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The effect of EA on the PSD percentage of the alpha (a) and beta (b) bands in the S1 of CFA rats. ∗P < 0.05 compared with the control group. △P < 0.05 compared with the model group. Abbreviations: PSD: power spectral density; EA: electroacupuncture; S1: primary somatosensory cortex; CFA: complete Freund's adjuvant.
