Meng Z, Lü G W
Department of Neurobiology, Capital Institute of Medicine, Beijing.
Sci China B. 1993 Oct;36(10):1198-206.
Electrical stimulation of the Zusanli point (ZSL) and solitary tract nucleus (SN) as well as microelectrode recording from the laminae III-V of the lumbar spinal dorsal horn have been used on the pentobarbital anesthetized rats, finding and identifying 57 spinal neurons responding to the stimulations of both ZSL and SN. Among them, 34 responded antidromically to SN; the others responded orthodromically to SN. Among them, the low-threshold mechano-receptive (LTM) neurons and wide-dynamic-range (WDR) neurons were 50 percent respectively. The results indicate that (i) a single spinal dorsal horn neuron receives somatic afferent input and then conveys it to the visceral sensory nucleus-SN; (ii) some spinal dorsal horn neurons receive, in turn, innervation from the SN; (iii) the convergence and integration between somatic and visceral sensory inputs might occur in the spinal dorsal horn neurons and/or SN.
在戊巴比妥麻醉的大鼠上，采用电刺激足三里穴（ZSL）和孤束核（SN）以及从腰髓背角Ⅲ-Ⅴ层进行微电极记录的方法，发现并鉴定出57个对ZSL和SN刺激均有反应的脊髓神经元。其中，34个对SN呈逆向反应；其余的对SN呈顺向反应。其中，低阈值机械感受（LTM）神经元和广动力范围（WDR）神经元各占50%。结果表明：（i）单个脊髓背角神经元接受躯体传入输入，然后将其传递至内脏感觉核——SN；（ii）一些脊髓背角神经元继而接受来自SN的神经支配；（iii）躯体和内脏感觉输入之间的汇聚和整合可能发生在脊髓背角神经元和/或SN中。
