The effect of acupuncture on somatosensory evoked potentials

After manual acupuncture in the Neiguan point no significant difference was detected on early component N9, N13, N20, as well as, the negative potential after N20 from 22 subjects with normal SEP. However in one patient with abnormal SEP the latencies were sometimes improved after acupuncture when the acupuncture simultaneously decreased the pain.