492471.fig.001
Figure 1: Effect of EA stimulation with or without MK801 pretreatment on the PWL to thermal stimuli. Each point indicates the mean ± SEM ( ). EA-stimulated rats showed a significant analgesic effect compared with normal control rats, and pretreatment with MK801 inhibited EA-induced analgesia. and compared with control rats; , , and compared with EA-treated rats.