Brushart T M, Mesulam M M
Science. 1980 May 9;208(4444):603-5. doi: 10.1126/science.7367884.
The connections between the spinal cord and lower leg muscles of the rat are significantly altered by repair of the intervening sciatric nerve. Muscles supplied by the peroneal branch of the sciatic are innervated by fewer motoneurons after sciatic repair. Many of these neurons originally innervated the peroneal muscles, and others formerly served the antagonistic tibial muscles. Perikarya in the size range of alpha motoneurons regained peripheral connections with greater frequency than those in the gamma range. There are thus postoperative defects in the extent and specificity of alpha reinnervation as well as in the degree of gamma control.
大鼠脊髓与小腿肌肉之间的连接会因坐骨神经的修复而发生显著改变。坐骨神经腓总分支所支配的肌肉在坐骨神经修复后，由较少的运动神经元支配。这些神经元中许多原本支配腓骨肌，其他一些则曾支配拮抗的胫骨肌。α运动神经元大小范围内的神经元胞体比γ运动神经元大小范围内的神经元胞体更频繁地重新建立外周连接。因此，术后α运动神经元再支配的范围和特异性以及γ运动神经元控制程度都存在缺陷。
