Eye position-dependent activation of neurones in striate cortex of macaque
Eye position-dependent activation of neurones in striate cortex of macaque
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DOI：
10.1097/00001756-199704140-00017
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发表时间：
1997-04-14
期刊：
影响因子：
1.7
通讯作者：
Li, CY
中科院分区：
文献类型：
--
作者：
Guo, K;Li, CY
在清醒的猴子的纹状皮质中进行细胞外记录，以测试眼睛位置对细胞活动的影响。两只猴子（Macaca mulatta）被训练在25个不同的眼睛位置固定一个小点。大约一半（52%）的神经元显示出选择性凝视场（GF）。当猴子盯着这个视野时，细胞的活动显著增加。对于这些神经元中的大多数，GF位于相对于记录反应的半球的对侧视野，并且通常在相关感受野的外围发现几度。眼位置依赖性神经元分布于皮层的不同深度，但大多数位于皮层浅层。结果表明，在纹状皮层的一些神经元可能编码的信息，眼睛的位置，并可能有助于目标定位在一个以头为中心的坐标系中，通过结合视网膜和传入的眼睛位置信号。
Extracellular recordings were made in the striate cortex in awake, behaving monkeys to test the influence of the eye position on cellular activity. Two monkeys (Macaca mulatta) were trained to fixate a small spot at 25 different eye positions. About half (52%) of the studied neurones showed a selective gaze field (GF). The cells' activities increased significantly when the monkey fixated at this field of view. For the majority of these neurones, GFs were located at the contralateral field of view with respect to the hemisphere from which responses were recorded, and were usually found a few degrees peripheral to the related receptive field. Eye position-dependent neurones were found at different depths of cortex, but mostly in the superficial layers. The results indicate that some neurones in striate cortex may code information about eye position and could contribute to target localization in a head-centred coordinate system by combining retinal and afferent eye position signals.