the respon-ses to pain and visceral tractional sensation were slight and short;in grade Ⅲ there were marked andprolonged responses.On 12 dogs subtotal gastrectomy was performed without acupuncture but only with supplementarydrugs.All of these dogs struggled and barked during the whole operation.As for the dogs operated with neither acupuncture nor supplementary drags
the operation wasvery difficult to perform.At the end of the operation traumatic shock occured.This exprimental model not only can be used to prove the anesthetic effect of acupuncture butcan also be used to further the study of the mechanism of acupuncture anesthesia.