Objective To examine the antagonization of phentolamine against the effects of norepinephrine (NE) on the activity of pain-related neurons in the parafascicular nucleus of morphine-dependent rats.

• 目的研究酚妥拉明阻断去甲肾上腺素对吗啡成瘾大鼠束旁核痛反应神经元电活动的影响。