足三里穴与三叉神经核间神经联系的电生理学研究

The Functtional Connection Among the "Zusanli"-Spinal Dorsal Horn Neurons-Trigeminal Sensory Nucleus of Rats

应用交替电刺激大鼠足三里穴（ST36）和三叉神经感觉核（TSN）及脊髓背角微电极细胞内记录的方法，寻找可被TSN逆向激动和ST36顺向激动的神经元。实验中共记录到142个对ST36刺激发生反应的神经元，其中29和21个神经元分别对TSN刺激发生逆向反应和突触反应。结果提示：（1）脊髓神经元可接受来自ST36的传入信息，并将其投射至TSN；（2）它也可接受来自TSN下行纤维支配。

Electrical stimulation of Zusanli (ST36 ) point and Trigeminal Sensory'Nucleus (TSN) as well asmicroelectroderecording from the laminae II - VI of the lumbar spinaldorsal horn have been used onthe pentobarbitalanesthetized rats, finding and identifying l42 spinal neurons responding to the stimulation of both ST36 and TSN. Among them, 29 responded antidromically to TSN 1 the others, responded orthodromically to TSN; These neurons distributed in the L2-S1 segments, the most in theL3- L6segments, and in the laminae IlI-V, occasionally in the laminae II and Vl in the spinal dorsa1horn, the IMTM andWDR neurons were 50% respectively of them. The results indicate that (i) single spinsal dorsal horn neurons receives ST36 afferent input and then conveys it to theTSN; (ii) somespinal dorsal horn neurons receive, in turn, innervation frotn TSN; (iii) The convergence and integration berween ST36 and TSN inputs might occur in the spinal dorsal horn neurons.