Figure 1: Experimental design and procedure. (a) Sexual behavior was tested prior to and after 5 days consecutive treatment of low-frequency EA (2 Hz, 1.5 mA, 30 min each). (b) Sexual behavior was tested pre- and post-treatment with high-frequency EA (80 Hz, 1.5 mA, 30 min once) at day 0, 2 and 6. (c) Schematic diagram showing the location of acupoints (CV4 and CV3) in the abdomen of the rat. EA: electroacupuncture, CV4: Guanyuan, CV3: Zhongji.