Hale J P, Burrows M
J Exp Biol. 1985 Jul;117:401-13. doi: 10.1242/jeb.117.1.401.
The innervation pattern of inhibitory motor neurones of the locust has been revealed by intracellular recording from their cell bodies in the meso- and metathoracic ganglion and simultaneous recording from muscle fibres in a middle, or in a hind leg. Three neurones in each ganglion, the common inhibitor (CI = CI1), the anterior inhibitor (AI = CI2), and the posterior inhibitor (PI = CI3) innervate several muscles in one leg and are thus common inhibitory neurones. Metathoracic CI innervates 13 muscles in one hind leg and mesothoracic CI innervates 12 muscles in one middle leg. The muscles are all in the proximal parts of the legs and move the coxa, the trochanter and the tibia. Metathoracic AI and PI innervate four muscles in the more distal parts of one hind leg that move the tibia, the tarsus and the unguis. None of these muscles is innervated by CI. Each inhibitor innervates muscles that have different and often antagonistic actions during movements of a leg. AI and PI receive many synaptic inputs in common and show similar patterns of spikes during imposed movements of a tibia. Tests fail, however, to reveal evidence for any electrical or synaptic coupling between them. A revised scheme of nomenclature for these inhibitory neurones is proposed.
通过对蝗虫中胸和后胸神经节中抑制性运动神经元胞体进行细胞内记录，并同时记录中腿或后腿肌肉纤维的活动，揭示了蝗虫抑制性运动神经元的神经支配模式。每个神经节中有三个神经元，即共同抑制神经元（CI = CI1）、前抑制神经元（AI = CI2）和后抑制神经元（PI = CI3），它们支配一条腿中的几块肌肉，因此是共同抑制神经元。后胸CI支配一条后腿中的13块肌肉，中胸CI支配一条中腿中的12块肌肉。这些肌肉都位于腿部的近端，负责移动髋关节、转节和胫骨。后胸AI和PI支配一条后腿较远端的四块肌肉，这些肌肉负责移动胫骨、跗节和爪。CI不支配这些肌肉中的任何一块。每个抑制神经元支配的肌肉在腿部运动过程中具有不同且通常相互拮抗的作用。AI和PI共同接受许多突触输入，并且在施加的胫骨运动期间显示出相似的放电模式。然而，测试未能揭示它们之间存在任何电耦合或突触耦合的证据。本文提出了这些抑制性神经元命名的修订方案。
