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[弥漫光闪烁刺激后视觉皮层神经元活动的空间分布变化]

[Changes in the spatial distribution of the neuronal activity in the visual cortex after stimulation with flashes of diffuse light].

作者信息

Chebkasov S A

出版信息

Fiziol Zh SSSR Im I M Sechenova. 1983 Jan;69(1):46-53.

PMID:6298014
Abstract

At different stages of development of the response to flash, grouping of excited neurons of the guinea pig 17th area occurs within the same cortical microzones separated by narrow inhibition zones common to the neighbouring excited ones. The ensembles of excited neurons have the form of columns narrowing into depth. The grouping of cells into a silent gap indicates the grouping of inhibiting neurons. Three subgroups are differentiated by the character of averaged dynamics of impulse activity in ensembles, the essential moment of their interrelationship being the reciprocity. The one subgroup in deep layers is characterized by stability of the focus at different stages of the response development and seems to express the grouping of corticofugal neurons. The ensembles are considered to be one of the forms of activity of the structured morphofunctional cortical units, i.e. the columns.

摘要

在对闪光反应的不同发育阶段,豚鼠第17区兴奋神经元的聚集出现在同一皮质微区内,这些微区被相邻兴奋微区共有的狭窄抑制区隔开。兴奋神经元的集合体呈向深部变窄的柱状。细胞聚集成一个沉默间隙表明抑制神经元的聚集。根据集合体中冲动活动平均动力学的特征可区分出三个亚组,它们相互关系的关键因素是相互性。深层中的一个亚组的特点是在反应发展的不同阶段焦点稳定,似乎表现为皮质传出神经元的聚集。这些集合体被认为是结构化形态功能皮质单位即柱状结构的活动形式之一。

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