Fig. 2

The bands (a) and wires (b) used in this study. a Applying low-frequency electrical stimulation at the acupuncture points BL62 and KI6 to a participant while measuring electrical current. The low-frequency electrical stimulation was applied through a band specifically designed for selective stimulation at BL62 and KI6 in conjunction with the simultaneous measurement of electrical current. b Electrical wires used for low-frequency electrical stimulation. Wires with or without a cut were made in an indistinguishable fashion to maintain the double-blind condition