CHARACTERIZATION OF A NOVEL CENTRAL PATTERN GENERATOR LOCATED IN THE 7TH ABDOMINAL-GANGLION OF LOCUSTA
CHARACTERIZATION OF A NOVEL CENTRAL PATTERN GENERATOR LOCATED IN THE 7TH ABDOMINAL-GANGLION OF LOCUSTA
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DOI：
10.1016/0022-1910(92)90010-b
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发表时间：
1992-12-01
影响因子：
2.2
通讯作者：
LANGE, AB
中科院分区：
文献类型：
--
作者：
FACCIPONTE, G;LANGE, AB
本文研究了半完整的非产卵蝗虫和受干扰的产卵蝗虫输卵管神经的神经活动。一个有节奏的运动模式，主要包括三个可辨别的大小的动作电位可以记录从不安的鸡蛋层，但不是从非鸡蛋层。大、小动作电位以协调的方式爆发，与中等大小的动作电位相互排斥。中等大小的动作电位被发现产生典型的肌电反应在输卵管的神经支配区域，而较大和较小的动作电位产生类似的反应在外部腹侧量肌的第七腹段。产生这种节律性运动模式所需的最小神经基质完全存在于第VII腹神经节中，如横断所示。所提出的数据表明，中央模式发生器控制的神经支配的区域的输卵管和第七腹段的腹侧外伸肌的相互收缩位于第七腹神经节，并由下行神经抑制控制。讨论了这种中央模式发生器的可能功能。
The neural activity recorded at the oviducal nerves of semi-intact non-egg-laying locusts and disturbed egg-laying locusts has been examined. A rhythmic motor pattern comprising predominantly three discernible sizes of action potentials could be recorded from disturbed egg-layers but not from non-egg-layers. The larger and smaller action potentials burst in a coordinated way which were mutually exclusive to the medium-sized action potential. The medium-sized action potential was found to produce typical electromyographic responses at the innervated regions of the oviduct while the larger and smaller action potentials produced similar responses at the external ventral protractor of the VIIth abdominal segment. The minimal neural substrate required to produce this rhythmic motor pattern resides entirely in the VIIth abdominal ganglion as shown by transections. The data presented suggests that a central pattern generator controlling the reciprocal contractions of the innervated regions of the oviduct and the external ventral protractors of the VIIth abdominal segment is located in the VIIth abdominal ganglion and is controlled by descending neural inhibition. Possible functions of this central pattern generator are discussed.