The effects of intraventricular injection of acetylcholine(ACh) on pain responsesof neurons in nucleus parafascicularis (Pf) and midbrain reticular formation (RF)in 54 rats were studied, using two microelectrodes recording simultaneously.

• 在54只大鼠上,用两支微电极同时记录神经元放电的方法,研究了脑室注射乙酰胆碱(ACh)对丘脑束旁核(Pf)和中脑网状结构(RF)痛反应神经元电活动的影响。