Abstract: This study is a further research on the relations between the suggestibility of cutaneous sensations (electric touch sensibility, electric pain)and the effect of acupuncture on cerebral potentials evoked by painfulstimulation. The subjects were 30 normal adults. Method: The role of acupuncture analgesia was observed through theinhibitory effect of acupuncture on cerebral potentials evoked by painfulstimulation. The criterion used was the variation of amplitude P_2 in the firstsomatosensory area. The method in the suggestibility experiment was thesame as in the previous paper. Essential results: 1) Acupuncture yielded inhibitory effect on pain. The majority ofsubjects (21/30) have shown inhibitory effect of acupuncture on cerebralpotentials evoked by painful stimulation. 2) Both electrical touch and pain thresholds increased under euggestion(by an average of 31.26% and 18.37% respectively). 3) There is no correlation between the size of suggestibility andinhibitory effect of acupuncture on cerebral pentials evoked by painful stimulation. It seems that the trust of the subject in acupuncture analgesia had no relation to the effect of acupuncture. Inductive suggestion played noimportant role in acupuncture analgesia.

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