[猫视觉皮层电位的不对称性]

[Asymmetry of cat visual cortex potentials].

作者信息

Filippova E B, Bianki V L

出版信息

Fiziol Zh SSSR Im I M Sechenova. 1981 Apr;67(4):506-15.

Abstract

EPs in response to weak and strong stimuli at 200 points of visual cortex in both hemispheres were recorded in acute experiments on 80 anesthetized cats. Individual and species asymmetry of EP in visual cortex was characterized by its bilateral origin, mosaic localization and time stability. Transection of corpus callosum decreased a slight asymmetry and augmented a strong one. The interaction of endogenous and exogenous asymmetries augments the general asymmetry, particularly with a stimulus in a sagital plane. The data obtained suggest a hemispheric specialization in animals.

摘要

在对80只麻醉猫进行的急性实验中，记录了两半球200个视觉皮层点对强弱刺激的诱发电位（EP）。视觉皮层中EP的个体和种属不对称性表现为其双侧起源、镶嵌定位和时间稳定性。胼胝体横断减少了轻微不对称性，增强了强烈不对称性。内源性和外源性不对称性的相互作用增强了总体不对称性，尤其是在矢状面刺激时。所获得的数据表明动物存在半球特化现象。

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