[皮层和下丘脑外侧强直刺激后锥体束的直接和半球间反应变化]
[Changes in the direct and interhemispheric responses of the pyramidal tract after tetanization of the cortex and lateral hypothalamus].
作者信息
Kozhedub R G, Zosimovskiĭ V A, Balashova A N
机构信息
Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.
出版信息
Zh Vyssh Nerv Deiat Im I P Pavlova. 1999 Nov-Dec;49(6):1057-62.
Changes in pyramidal tract response after unilateral neocortical and lateral hypothalamic tetanization were analyzed in unanesthetized and nonimmobilized rabbits. Membrane and synaptic modifications were revealed in intra- and interhemispheric connections. Changes in excitability of callosal collaterals of pyramidal tract neurons in contralateral hemisphere and changes in somatodendritic excitability in ipsilateral hemisphere could be oppositely directed. Plasticity of callosal connections may contribute to the interhemispheric asymmetry during learning.
在未麻醉且未固定的兔子中，分析了单侧新皮层和下丘脑外侧强直刺激后锥体束反应的变化。在半球内和半球间连接中发现了膜和突触的改变。对侧半球锥体束神经元胼胝体侧支的兴奋性变化和同侧半球体树突兴奋性变化可能呈相反方向。胼胝体连接的可塑性可能有助于学习过程中的半球间不对称。
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