The pain response of the most pain units to peripheral noxious stimulation was affected apparently by phentolamine, haloperidol, atropine, diazepam, cyproheptadine.

• 除对照组外，大多数痛单位对伤害性刺激的痛反应均明显受受体拮抗剂或激动剂如酚妥拉明、氟哌啶醇、阿托品、地西泮、赛庚啶等的影响。