Decktor D L, Weems W A
J Physiol. 1983 Aug;341:197-211. doi: 10.1113/jphysiol.1983.sp014801.
Intracellular recordings were made in vitro from neurones located within the left coeliac ganglion of the cat solar plexus. Thirty percent of the neurones within left coeliac ganglia were identified as efferent neurones. Within this neuronal population, splenic-efferent and renal-efferent neurones were identified specifically. Neurones within left coeliac ganglia were characterized as either phasic (fast adapting) neurones or tonic (slowly adapting) neurones depending upon their prolonged firing behaviour. Electrophysiological properties of neurones varied considerably. The wide range of values obtained for both input resistance and input capacitance suggest that sizeable differences in either specific membrane resistance or cell geometry exist within the over-all neurone population. Frequency distributions of input resistance, time constant, input capacitance and current threshold for tonic and phasic neurones were found to be significantly different. Compound excitatory post-synaptic potentials were produced by stimulation of the ipsilateral splanchnic nerves in 69% of the neurones tested and in 3% of the neurones tested upon stimulation of the contralateral splanchnic nerves. Electrical stimulation of nerve fibres located in the coeliac plexus, the superior mesenteric plexus or the left renal nerves generated excitatory synaptic potentials in neurones located within left coeliac ganglia. It is concluded that neurones within the left coeliac ganglion are innervated by splanchnic nerve fibres primarily contained within the left splanchnic nerves, receive excitatory synaptic input from splenic, renal and other peripheral preganglionic fibres and have extremely varied electrophysiological properties.
在体外对猫腹腔神经丛左腹腔神经节内的神经元进行细胞内记录。左腹腔神经节内30%的神经元被确定为传出神经元。在这群神经元中，特别鉴定出了脾传出神经元和肾传出神经元。根据左腹腔神经节内神经元的持续放电行为，将其分为相位性（快速适应）神经元或紧张性（缓慢适应）神经元。神经元的电生理特性差异很大。输入电阻和输入电容所获得的广泛数值表明，在整个神经元群体中，比膜电阻或细胞几何形状存在相当大的差异。发现紧张性和相位性神经元的输入电阻、时间常数、输入电容和电流阈值的频率分布有显著差异。在69%的受试神经元中，刺激同侧内脏神经可产生复合兴奋性突触后电位，而在3%的受试神经元中，刺激对侧内脏神经可产生该电位。对位于腹腔丛、肠系膜上丛或左肾神经中的神经纤维进行电刺激，可在左腹腔神经节内的神经元中产生兴奋性突触电位。得出的结论是，左腹腔神经节内的神经元主要由左内脏神经中所含的内脏神经纤维支配，接受来自脾、肾和其他外周节前纤维的兴奋性突触输入，并且具有极其多样的电生理特性。
