Keywords Electrical Acupuncture Analgesia, Electroacupuncture Tolerance, Pain Threshold, Neuroelectrophysiology, Cholecystokinin Octapeptide, Immunohistochemistry, In-situ-hybridization;

• 电针镇痛;电针耐受;痛阈;神经电生理;八肽胆囊收缩素;免疫组织化学;原位杂交;