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猫外膝体神经元对光栅刺激方位倾向性的一种分布特性

寿天德, 阮迪云, 张达人, 薛晋堂, 夏德瑜

中国科技大学生物系视觉研究实验室. 安徽, 合肥

摘要

作者检测了猫外膝体(LGN)神经元对闪烁方波光栅的反应与光栅方位的关系。对一定对比度和空间频率的光栅,26个记录到的神经元的反应均随方位不同而变化,其最大反应和最小反应的比值平均为3.0±0.3(S.E.)。神经元的最优方位(即引起最大反应的光栅方位)随其感受野中心在视网膜上的位置而异,具有平行于其各自感受野中心与视网膜中央区(area cen-sralis)的连接线的倾向。

关键词： 方位; 光栅; 外膝体; 感受野; 猫

A property of cat lateral geniculate neurons with reference to preferred orientation of grating stimuli

Shod Tiande, Ruan Diyun, Zhang Daren, Xie Jintang, Xia Deyu

Vision Research Laboratory, Department of Biology, University of Science and Technology of China. Hefei, Anhui, China

Abstract

The responses of cat lateral geniculate neurons to presentation and withdrawal of a square-wave grating stimulus were measured as a function of the grating orientation. For a given contrast and spatial frequency, the response to a grating varied. always with orientation in all recorded neurons. The mean ratio of the peak response to optimally orientated grating to that elicited by the worst oriented grating for 26 neurons was 3.0±0.3 (S. E.). The optimal orientation of LGN neurons varied with the position of their receptive field centres in the retina and tended to lie parallel to the line jointing the centre of receptive field and area centralis.

Key words: Orientation;Grating;Lateral geniculate neurons;Receptive field;Cat

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引用本文：

寿天德, 阮迪云, 张达人, 薛晋堂, 夏德瑜. 猫外膝体神经元对光栅刺激方位倾向性的一种分布特性[J]. 生理学报 1985; 37 (1): .

Shod Tiande, Ruan Diyun, Zhang Daren, Xie Jintang, Xia Deyu. A property of cat lateral geniculate neurons with reference to preferred orientation of grating stimuli. Acta Physiol Sin 1985; 37 (1): (in Chinese with English abstract).