Shupliakov O V, Antal M, Székely G
Sechenov Institute of Evolutionary Physiology and Biochemistry, Academy of Science of the USSR, Leningrad.
Neurosci Lett. 1990 Sep 18;117(3):289-94. doi: 10.1016/0304-3940(90)90679-4.
About one third of motoneurons stimulated intracellularly evoked dorsal root potentials (DRP) in the lumbar segments of the isolated and perfused frog spinal cord. Axon collaterals were found in one of the 22 motoneurons filled with HRP (horseradish peroxidase) through the stimulating electrode. In further experiments injecting individual motoneurons with cobalt, and filling the ventral roots with HRP or cobalt, the frequency of occurrence of axon collaterals was about 2% of the number of labelled motor cells. It is suggested that the presence of motor axon collaterals is not indispensable in the generation of the DRP evoked by ventral root or motor cell stimulation.
在分离并灌注的蛙脊髓腰段，约三分之一的运动神经元经细胞内刺激可诱发背根电位（DRP）。在通过刺激电极用辣根过氧化物酶（HRP）标记的22个运动神经元中，有一个发现了轴突侧支。在进一步的实验中，向单个运动神经元注射钴，并向腹根注入HRP或钴，轴突侧支出现的频率约为标记运动细胞数量的2%。这表明运动轴突侧支的存在对于腹根或运动细胞刺激诱发的DRP的产生并非不可或缺。
