文献报道“医风”穴有良好的针麻效应

可单用此穴针麻施行阑尾切除术

我们过去在进行电针家兔夹脊穴观察针麻效应的工作中

偶将针灸针试刺“医风”穴

发现动物进入类似睡眠的状态

并出现鼾声和流涎现象

引起我们对该穴位的极大兴趣

考虑到此部位离脑中枢极近

解剖结构复杂

有许多神经行经该穴位区

是否电针此部位会引起脑中枢的某种效应有待探索

鉴于尚未见到“医风”穴与血压变化关系的文献报道

故我们选择较敏感的血压Experiments were performed in adult rabbits anesthesized with urethane and immobilized with tubocurarini chloride. Given electro-acupuncture stimulation at bilateral“Yifeng”points

the animals' blood pressures showed obvious responses.The patterns of blood pressure responses can be divided into three groups:the bi-phasic type with first declining followed by ascending of blood pressure

the simple declining type and the simple ascending type.Bi-phasic type accounted for 80 percent or so.The blood pressure effects of electro-acupuncture at bilateral“Yifeng points were not influenced by section of bilateral cervical vagus nerves

the effect of electro-stimulating the central end of cut cervial vagus nerve directly was quite similar to that of stimulating the”Yifeng“points. The results showed that the blood pressure responses of electro-acupuncture at”Yifeng“poihts were not resulted from the muscle tonus or the peripheral effect of vagus nerve;and it might be that the spreading of electric current perhaps influences some nerve near by

especially the vagus

and then the inflows travelling via vagus to the brain resulted in a central effect.A po- ssible mechanism of this central effect is dissussed in this paper briefly.