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November 2022

Sheng Li Xue Bao. 1993 Apr; 45(2): 142-8.

[Descending cord dorsum potentials evoked by stimulation at "Yong Quan" acupoint]

Zheng QY, Cheng ZF.

Department of Physiology, Xi'an Medical University.

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.

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