The effects of high-frequency microstimulation of the cortex on interhemisphere synchronization in the rat motor cortex

被引：7

作者：

Bogdanova O.G. ^{[1
]}

Sil'kis I.G. ^{[1
]}

机构：

[1] Neurophysiology Laboratory, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, 117865 Moscow

来源：

Neuroscience and Behavioral Physiology | 1999年 / 29卷 / 5期

关键词：

Interhemisphere synchronization; Motor cortex; Post-tetanic modification; Reciprocal connections;

D O I：

10.1007/BF02461143

中图分类号：

学科分类号：

摘要：

Studies were carried out on long-term changes in the synchronization of neuronal activity in networks including callosal cells of the opposite hemispheres evoked by high-frequency microstimulation in the motor cortex of anesthetized rats. The level of synchronization was assessed in terms of the amplitude and width of peaks located symmetrically on cross-correlograms relative to the coordinate origin. Tetanization predominantly decreased synchronization in a group of initially background-active neurons, while there was a significant number of synchronously firing neurons in a group of cells which became activated. "Super-narrow" peaks appeared in interhemisphere interactions. There was a correlation between the type of modification of "narrow" (<20 msec) and "intermediate" (30-80 msec) peaks and changes in the efficiencies of mono- and polysynaptic connections. © 1999 Kluwer Academic/Plenum Publishers.

引用

页码：515 / 522

页数：7

共 16 条

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