【摘要】 在大鼠脊神经节细胞周围突向肋间神经和胃等内脏分支投射基础上，用电刺激大鼠左侧切断神经根的Ｔ_１０肋间神经，记录了同侧内脏大神经上的诱发电位。结果：记录到平均传导速度为１２．４０ｍ／ｓｅｃ的复合动作电位，此结果不受呼吸肌麻痹的影响，但麻醉肋间种经或内脏大神经后不再出现。提示：神经冲动可从脊神经节细胞周围突行走在肋间神经中的躯体分支，经分叉处传导到行走于内脏大神经中的内脏分支，这些分支以 Ａ－δ纤维为主。更多还原

【Abstract】 On the basis of dichotomizing projection of the peripheral processes of the spinal ganglion cells to both the intercostal nerves and viscera（such as stomach and so on） in rats, the evoked potential was recorded from the ipsilateral greater splanchnic nerve after electrostimulating the left T₁₀ intercostal nerve, the roots of which had been cut. Result: the complex action potential, the mean conduction velocity of which was 12. 40m/sec, was recorded, the result was not influenced by paralysis of respiratory muscles, but lost after anesthesia of the intercostal nerve or greater splanchnic nerve. These findings suggest that neural impulse can conduct from the somatic branches, which go through the intercostal nerve, of the peripheral process of the spinal ganglion cells to the visceral ones, which pass through the greater splanchnic nerve, these branches are mainly A-a fibers.更多还原