ORIENTATION SPECIFICITY OF CELLS IN CAT STRIATE CORTEX
ORIENTATION SPECIFICITY OF CELLS IN CAT STRIATE CORTEX
复制标题
DOI：
10.1152/jn.1974.37.6.1394
复制
发表时间：
1974-01-01
影响因子：
2.5
通讯作者：
BISHOP, PO
中科院分区：
文献类型：
--
作者：
HENRY, GH;DREHER, B;BISHOP, PO
对纹状皮层细胞最有效的刺激是延伸的明暗边界、在感受野上移动的亮条或暗条。对于大多数神经元来说，响应的大小取决于边界（边缘）或条的方向。由于细胞在某些刺激方向上反应更加强烈，而在其他刺激方向上几乎没有或根本没有反应，因此据说它表现出方向特异性。术语“方向特异性”与 Campbell 等人的术语“角度选择性”同义(6)。尽管与刺激的频率分量无关，但定向响应曲线或定向特异性曲线通常称为定向调谐曲线。本文是三篇论文中的第三篇，其中两篇已经发表 (10, 11)，其中我们详细研究了方向特异性的各个方面。本文几乎完全关注皮质细胞对延长条和单个明暗边缘的方向特异性。我们研究了纹状皮层中三种常见细胞类型（即简单、复杂和超复杂类型）的特异性在哪些方面存在差异，以及在多大程度上可以根据这些细胞的感受野组织来解释各种特性。一般来说，纹状细胞对移动刺激的反应比对静态刺激的反应强烈得多，因此，除非另有说明，本研究中的所有方向调整曲线都是用移动条或边缘刺激记录的。在之前的论文 (10) 中，将移动条的方向作为刺激参数与其他两个参数进行了仔细区分。
THE MosT GENERALLY effective stimuli for cells in the striate cortex are extended light-dark borders, bars of light, or dark bars moved over the receptive field. For the great majority of these neurons the magnitude of the response depends on the orientation of the border (edge) or bar. Because the cell responds much more vigorously at some stimulus orientations and barely or not at all at others, it is said to show orientation specificity. The term orientation specificity-is synonymous with the term angular selectivity of Campbell et al.(6). Although it has nothing to do with the frequency components of the stimulus, the orientation-response curve or orientation specificity curve is commonly referred to as an orientation tuning curve. The present paper is the third of three papers, two of which have already been published (10, 11) in which we examine various aspects of orientation specificity in some detail. This paper is almost entirely concerned with ihe orientation specificity of cortical cells to extended bars and single light and dark edges. We examine in what respects the specificities differ in the three common types of cell in the striate cortex, namely the simple, complex, and hypercomplex types, and to what extent the various properties can be explained in terms of the receptive-field organization of these cells.In general, striate cells respond much more vigorously to a moving than a stationary stimulus so that, unless otherwise indicated, all the orientation tuning curves in this investigation have been recorded with a moving bar or edge stimulus. In a previous paper (10) the orientation of a moving bar as a stimulus parameter was carefully distinguished from two other