Blagodatova E T, Predtechenskaia K S, Evdokimov S A, Aleksandrov V G
Fiziol Zh SSSR Im I M Sechenova. 1979 Aug;65(8):1172-80.
The ventral horn interneurons in the spinal cord L6-7 segments were recorded in anesthetized cats during stimulation of the pericruciate cortex of both cerebral hemispheres. The majority of ventral interneurons are activated by volleys from the contralateral motor cortex and nearly half of them--by volleys from the ipsilateral cortex as well. Two kinds of firing patterns occurred: separate spikes and bursts of spikes. The latency of the 1st type firing was significantly greater than that of the 2nd one. There was a close relation of convergence of the afferent and corticospinal volleys on ventral horn interneurons: neurons activated by ipsilateral afferents only received synaptic influence only from the contralateral motor cortex whereas neurons with ipsilateral as well as contralateral inputs were activated by corticospinal volleys from both hemispheres. The interneurons with bilateral segmental and supraspinal connections seem to be involved in integrative action as important elements of the neuronal mechanism of bilateral motor coordination.
在麻醉猫的实验中，刺激双侧大脑半球的十字周皮层时，记录脊髓L6 - 7节段的腹角中间神经元。大多数腹侧中间神经元由对侧运动皮层的冲动激活，近一半的腹侧中间神经元也可由同侧皮层的冲动激活。出现了两种放电模式：单个尖峰和尖峰簇。第一种放电类型的潜伏期显著长于第二种。传入冲动和皮质脊髓冲动在腹角中间神经元上存在紧密的汇聚关系：仅由同侧传入激活的神经元仅接受来自对侧运动皮层的突触影响，而具有同侧和对侧输入的神经元则由双侧半球的皮质脊髓冲动激活。具有双侧节段性和脊髓上连接的中间神经元似乎作为双侧运动协调神经元机制的重要元素参与整合作用。
