Shramm V A, Kharitonov E V
Neurosci Behav Physiol. 1984 Nov-Dec;14(6):510-5. doi: 10.1007/BF01186022.
The interaction between transcallosal potentials and the responses to stimulation of the contralateral sciatic nerve was studied at 85 sites in the sensorimotor region of the cortex in acute experiments on cats. It was shown that the effect of the interaction of these responses is determined by their configuration at the given site, as well as by the time interval between responses. The interaction was of a pronounced spatial-temporal character. Facilitatory influences were localized, as a rule, in the zone of overlap of the foci of evoked potentials, while the peripheral areas of the cortex were in large degree subjected to the depressant action of the transcallosal flow. At the same time the regions between sites were characterized by a dynamic succession of facilitatory and depressant influences. The described interaction effects are viewed as a manifestation of the modulating function of the transcallosal flow, which realizes the concentration and contrasting of the excitation propagated along ascending pathways.
在对猫进行的急性实验中，研究了胼胝体电位与对侧坐骨神经刺激反应之间的相互作用，研究部位为大脑皮层感觉运动区的85个位点。结果表明，这些反应相互作用的效果取决于给定部位的反应构型以及反应之间的时间间隔。这种相互作用具有明显的时空特征。通常，易化作用集中在诱发电位焦点的重叠区域，而皮层的周边区域在很大程度上受到胼胝体信息流的抑制作用。同时，位点之间的区域表现出易化和抑制作用的动态交替。所描述的相互作用效应被视为胼胝体信息流调节功能的一种表现，该功能实现了沿上行通路传播的兴奋的集中和对比。
