Fourtner C R, Drewes C D
J Neurobiol. 1977 Sep;8(5):477-89. doi: 10.1002/neu.480080508.
The responses of the widespread common inhibitory motor neuron (CI) to tactile stimulation of the cercus and the abdomen and electrical stimulation of the cercal nerve and the abdominal connectives are investigated. Tactile stimulation produces high frequency (greater than 500 impulses/s) spike discharge in CI with the onset of CI activity preceding the discharge of the excitatory motor neurons. Electrical stimulation of the connectives demonstrates a monosynaptic connection between at least one intermediate sized fiber (conduction velocity =3.7 m/s) in the abdominal connective and the ipsilateral CIs in the meso-and metathoracic ganglia. Electrical stimulation of the cercal nerve suggests a disynaptic path from cercal nerve to CI. Arguments are presented for a cercal afferent-to-CI reflex and the possible functional role of early excitation of CI is discussed.
研究了广泛分布的普通抑制性运动神经元（CI）对触角和腹部触觉刺激以及触角神经和腹部神经索电刺激的反应。触觉刺激会在CI中产生高频（大于500次冲动/秒）的尖峰放电，CI活动的起始先于兴奋性运动神经元的放电。对神经索的电刺激表明，腹部神经索中至少一根中等大小的纤维（传导速度 = 3.7米/秒）与中胸和后胸神经节中的同侧CI之间存在单突触连接。对触角神经的电刺激表明存在一条从触角神经到CI的双突触路径。提出了关于触角传入到CI的反射的观点，并讨论了CI早期兴奋可能的功能作用。
