electro-acupuncture
Other13points were selected including he-gu(LI4), nei-guan(PC6), tai-chong(LR3) and san-yin-jiao(SP6) from both sides, bai-hui(GV20) and si-shen-cong(EX-HN1) from head.
HANS-200A acupoints stimulator, which had two output channels, was connected to some selected points. Dilatational wave was adopted in this research, the frequency of rarefaction wave was 2 hertz and condensation wave was 100 hertz, with a waviness width of 0.3ms. Switched the stimulator on after connected the poles to the needles, adjusted the intensity of output gradually from 0 milliampere to the extent of subject's maximum tolerance. Then needles would be remained on the body for half an hour.