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首页> 外文期刊>Journal of Neurophysiology >Multifunctional neuron CC6 in Aplysia exerts actions opposite to those of multifunctional neuron CC5.
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Multifunctional neuron CC6 in Aplysia exerts actions opposite to those of multifunctional neuron CC5.

机译：海Ap中的多功能神经元CC6发挥的作用与多功能神经元CC5相反。

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摘要

The controls of somatic and autonomic functions often appear to be organized into antagonistic systems. This issue was explored in the bilaterally paired C cluster neuron, CC6, which was found to have properties that suggested that it might function antagonistically to the previously identified multiaction neuron, CC5. Similar to CC5, CC6 is an interganglionic neuron that sends its sole axon to the ipsilateral and contralateral pedal and pleural ganglia. Synaptic inputs to CC6 were opposite to those of CC5. For example, CC6 receives inhibitory inputs from mechanical touch to the lips and tentacles and is excited by firing of C-PR, a neuron involved in the control of a head extension response. Also during rhythmic buccal mass movements CC6 receives synaptic inputs that are out of phase with those received by CC5. CC6 is inhibited during a fictive locomotor program, whereas CC5 is excited, but unlike CC5, the inputs to CC6 are not rhythmic. CC6 has extensive mono- and polysynaptic outputs to many identified and unidentified neurons located in various central ganglia. Firing of CC6 evoked ipsilateral contraction of the transverse muscles of the neck, whereas CC5 contracts longitudinal neck muscles. CC6 monosynaptically inhibits the pedal artery shortener neuron, whereas CC5 monosynaptically excites the pedal artery shortener neuron. Specific motor neurons in the pedal ganglion receive synaptic inputs of opposite sign from CC5 and CC6. Although the inputs and most of the effects of CC6 were opposite to those of CC5, both cells were found to produce polysynaptic excitation of the abdominal ganglion neuron RBhe, a cell whose activity excites the heart. CC5 and CC6 appear to be multifunctional neurons that form an antagonist pair.
机译：躯体和自主功能的控制常被组织成对立的系统。在双边配对的C簇神经元CC6中探讨了此问题，发现该属性具有暗示其可能与先前确定的多作用神经元CC5具有拮抗作用的特性。与CC5相似，CC6是一种神经节间神经元，将其唯一的轴突发送到同侧和对侧踏板和胸膜神经节。 CC6的突触输入与CC5的相反。例如，CC6接收到来自机械触摸到嘴唇和触手的抑制输入，并通过发射C-PR（一种参与控制头伸反应的神经元）而兴奋。同样在有节奏的颊侧群众运动期间，CC6接收到的突触输入与CC5接收的相位不同。在虚拟运动程序中，CC6被禁止，而CC5则被激发，但是与CC5不同，CC6的输入不是有节奏的。 CC6对位于各个中央神经节的许多已识别和未识别神经元具有广泛的单突触和多突触输出。 CC6的触发引起颈部横向肌的同侧收缩，而CC5的收缩则引起纵向颈肌。 CC6单突触抑制踏板动脉缩短神经元，而CC5单突触刺激踏板动脉缩短神经元。踏板神经节中的特定运动神经元从CC5和CC6接收相反符号的突触输入。尽管CC6的输入和大多数作用与CC5相反，但发现这两种细胞都能产生腹神经节神经元RBhe的多突触兴奋作用，该细胞的活性使心脏兴奋。 CC5和CC6似乎是形成拮抗剂对的多功能神经元。

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