Electro-acupuncture, the application of a pulsating electrical current to acupuncture needles as a means of stimulating the acupoints, was developed in China as an extension of hand manipulation of acupuncture needles around 1934.
Figure 2: Samples of wave forms produced by electro-acupuncture devices.
ITM Online. (n.d.). [Image of electro-acupuncture treatment]. ITM Online. Available here.