Zheng Q Y, Cheng Z F
Department of Physiology, Xi'an Medical University.
Sheng Li Xue Bao. 1993 Apr;45(2):142-8.
Segmental spinal cord potential (Y-sCDP) evoked by stimulation at "Yong Quan" acupoint of Sprague-Dawley rat vanished gradually when the recording electrode was moved rostrally along the dorsal surface of the spinal cord. When the recording electrode was placed more rostrally, for example at C6, another positive slow potential, Y-dCDP, could be recorded. Y-dCDP disappeared completely when the spinal cord had been sectioned at a higher cervical level. Electrolytic lesions of ventral periaqueductal gray (PAG) could also decrease remarkably the amplitude of Y-dCDP. This facet suggests that the PAG, an analgesia related nucleus, is involved in the generation of Y-dCDP induced by stimulation at "Yong Quan" acupoint.
刺激斯普拉格-道利大鼠“涌泉”穴诱发的节段性脊髓电位（Y-sCDP），当记录电极沿脊髓背表面向头端移动时会逐渐消失。当记录电极放置在更靠近头端的位置，如C6时，可记录到另一个正性慢电位，即Y-dCDP。当脊髓在更高的颈段水平横断时，Y-dCDP完全消失。腹侧导水管周围灰质（PAG）的电解损伤也可显著降低Y-dCDP的波幅。这一方面提示，作为与镇痛相关的核团，PAG参与了“涌泉”穴刺激诱发的Y-dCDP的产生。
