猫闰绍细胞的反复兴奋和相互抑制模式
Patterns of recurrent excitation and mutual inhibition of cat Renshaw cells.
作者信息
Ryall R W
出版信息
J Physiol. 1981 Jul;316:439-52. doi: 10.1113/jphysiol.1981.sp013799.
Abstract
- Patterns of convergent excitation and mutual inhibition of Renshaw cells to antidromic volleys in motor axons were investigated in cats anaesthetized with chloralose. 2. There were widely varying patterns of excitatory convergence onto individual Renshaw cells, but grouping the cells into different populations revealed the underlying positive and negative correlations between inputs from different motor nerves. 3. The greatest excitatory convergence was seen between axons supplying functionally synergistic muscles. 4. Mutual inhibition between Renshaw cell populations was most evident between antagonist motoneurones and so was inversely related to the excitatory inputs. 5. These results are discussed in relation to the control of recurrent inhibitory phenomena mediated by renshaw cells.
摘要
- 在用氯醛糖麻醉的猫中，研究了闰绍细胞对运动轴突逆行冲动的会聚性兴奋和相互抑制模式。2. 单个闰绍细胞的兴奋性会聚模式差异很大，但将细胞分组为不同群体后，揭示了来自不同运动神经的输入之间潜在的正相关和负相关。3. 在支配功能协同肌肉的轴突之间观察到最大的兴奋性会聚。4. 闰绍细胞群体之间的相互抑制在拮抗运动神经元之间最为明显，因此与兴奋性输入呈负相关。5. 结合由闰绍细胞介导的反复抑制现象的控制对这些结果进行了讨论。
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