Randomization and blinding study design
First, a total of 60 subjects (female: male = 1:1) were recruited, and were divided into two groups according to gender. Each group was randomly numbered 1–30, the two groups numbered 1–15 were combined into the sham electrical acupuncture group (Group 1), and the two groups numbered 16–30 were combined into the verum electrical acupuncture group (Group 2) (Figure Experimental paradigm. All participants were randomly divided into two groups and then underwent fMRI with simultaneous EAS scans