State-dependent responses of two motor systems in the crayfish, Pacifastacus leniusculus.
State-dependent responses of two motor systems in the crayfish, Pacifastacus leniusculus.
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小龙虾 Pacifastacus leniusculus 两个运动系统的状态依赖性反应。
DOI：
10.1007/bf00192996
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Mulloney,B
中科院分区：
文献类型：
--
作者：
Chrachri,A;Neil,D;Mulloney,B
刺激胸神经节第二根可影响螯虾的泳动和姿势运动模式的表达。swimmeret系统的反应取决于姿势系统的状态。在大多数情况下，swimmeret系统的反应比刺激持续时间长。刺激胸第二根也引起姿势系统的协调反应，比刺激持续时间长。在不同的准备，无论是屈肌兴奋运动神经元或伸肌兴奋运动神经元兴奋，这种刺激。在每种情况下，一组运动神经元的兴奋都伴随着该组功能拮抗剂的抑制，这种刺激似乎协调了两个系统的活动;当刺激抑制屈肌运动神经元时，伸肌运动神经元和游泳系统就会兴奋。当刺激兴奋屈肌运动神经元，然后伸肌运动神经元和swimmeret系统被抑制。两类interneurons的刺激胸第二根中遇到的第一腹神经节。这些interneurones可能是协调姿势和swimmeret系统对刺激胸第二根的反应的途径。
The expression of both swimmeret and postural motor patterns in crayfish (Pacifastacus leniusculus) were affected by stimulation of a second root of a thoracic ganglion. The response of the swimmeret system depended on the state of the postural system. In most cases, the response of the swimmeret system outlasted the stimulus.Stimulation of a thoracic second root also elicited coordinated responses from the postural system, that outlasted the stimulus. In different preparations, either the flexor excitor motor neurones or the extensor excitor motor neurones were excited by this stimulation. In every case, excitation of one set of motor neurones was accompanied by inhibition of that group's functional antagonists.This stimulation seemed to coordinate the activity of both systems; when stimulation inhibited the flexor motor neurones, then the extensor motor neurones and the swimmeret system were excited. When stimulation excited the flexor motor neurones, then the extensor motor neurones and the swimmeret system were inhibited.Two classes of interneurones that responded to stimulation of a thoracic second root were encountered in the first abdominal ganglion. These interneurones could be the pathway that coordinates the response of the postural and swimmeret systems to stimulation of a thoracic second root.