As a measure of visceral pain

the Galvanic Skin Reflex(GSR)

caused by splanchnic nerve stimulation

was recorded in the conscious cats. The inhibitory effect of splanchnic-GSR response caused by“Zusanli” was stronger than that of by another acupoints such as“Jizhong” “Quchi”

“Renchong”

“Chengjiang”. The ordinary effect of acupuncture analgesia could not be demonstrated by needling the“control”point(non-channel focus)

such as the root of ear

and some areas of the chest

neck

forehead etc.The effect Inhibitory effect

however

appeared to be more prompt and efficient when both points were applied simultaneously.The difference in the analgesic effect between“Zusanli”acupoint and the“Control”point was significant(P<0.001). The mechanism of the specificity of acupoints was discussed.It seems that the specific effects of different acupoints depend not fully on the degree of abundance of the muscle under the acupoints.Furthermore

the stimulation of acupuncture is different from the direct stimulation of a nerve

innervating that acupoints.Probably

the complexity of the structure of an acupoint is one of the explainations of different effects of the acupuncture.