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视觉刺激对猴初级视皮层神经元眼球位置效应的影响

郭昆, 李朝义

中国科学院上海生理研究所感觉信息处理研究室，上海200031；中国科学院生物物理研究所视觉信息处理开放实验室，北京100101)

摘要

用细胞外记录的方法，研究了视觉刺激对清醒猴初级视皮层神经元眼球位置效应的影响。当猴注视电视屏幕上25个不同位置的小光点(注视点)时，在屏幕上分别给予两种不同形式的视觉刺激:注视点周围的闪烁圆环和感受野内的移动光条。这两种刺激都能增强初级视皮层神经元的眼球位置相关活动，并相应地使受眼球位置调制的神经元的比例明显增加。以上结果表明，视皮层的第一级神经元已经可以对视觉信息和眼球位置信息进行整合。

关键词： 猴; 初级视皮层; 眼球位置; 注视; 注视野; 感受野

INFLUENCE OF VISUAL STIMULI ON EYE-POSITION RELATED ACTIVITIES OF NEURONS IN PRIMARY VISUAL CORTEX (VI)OF AWAKE MONKEYS

GUO KUN, LI CHAO-YI

Shanghai Institute of Physiology, Chinese Academy of Sciences, Shanghai 200031 Laboratory of Visual Information Processing, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101)

Abstract

Extracellular recordings were made in the primary visual cortex(Vl)in two
awake monkeys to test the influence of visual stimuli on the eye-position related activites of the neurons. While the monkeys gazed on a fixation point (FP) positioned sequentially at different locations on a TV screen，two types of visual stimuli were presented on the same screen:(1)A small light ring flashed repeatedly around the FP or (2) A prefered light bar shifted continuously across the cell's receptive field (RF).Both stimuli significantly enhanced the eye-position related activities and corresponding1y increased the incidence of the eye-position dependent neurons. The results show that
the integration of information on vision and on eye position may take place at quite the earliest stage of the visual cortices.

Key words: monkey;striate cortex;eye position;fixation;gaze field;receptive field

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引用本文：

郭昆, 李朝义. 视觉刺激对猴初级视皮层神经元眼球位置效应的影响[J]. 生理学报 1997; 49 (4): .

GUO KUN, LI CHAO-YI. INFLUENCE OF VISUAL STIMULI ON EYE-POSITION RELATED ACTIVITIES OF NEURONS IN PRIMARY VISUAL CORTEX (VI)OF AWAKE MONKEYS . Acta Physiol Sin 1997; 49 (4): (in Chinese with English abstract).