De Valois R L, Albrecht D G, Thorell L G
Vision Res. 1982;22(5):545-59. doi: 10.1016/0042-6989(82)90113-4.
We measured the spatial frequency contrast sensitivity of cells in the primate striate cortex at two different eccentricities to provide quantitative statistics from a large population of cells. Distributions of the peak frequencies and bandwidths are presented and examined in relationship to (a) each other, (b) absolute contrast sensitivity, (c) orientation tuning, (d)retinal eccentricity, and (e) cell type. Simple and complex cells are examined in relationship to linear/nonlinear (that is, X/Y) properties; a procedure is described which provides a simple, reliable and quantitative method for classifying and describing striate cells. Among other things, it is shown that (a) many stirate cells have quite narrow spatial bandwidths and (b) at a given retinal eccentricity, the distribution of peak frequency covers a wide range of frequencies; these findings support the basic multiple channel notion. The orientation tuning and spatial frequency tuning which occurs at the level of striate cortex (in a positively correlated fashion) suggests that the cells might best be considered as two-dimensional spatial filters.
我们测量了灵长类动物纹状皮层中细胞在两个不同离心率下的空间频率对比敏感度，以便从大量细胞中提供定量统计数据。给出了峰值频率和带宽的分布情况，并对其与以下因素的关系进行了研究：(a) 彼此之间的关系；(b) 绝对对比敏感度；(c) 方向调谐；(d) 视网膜离心率；(e) 细胞类型。针对简单细胞和复杂细胞，研究了它们与线性/非线性（即X/Y）特性的关系；描述了一种程序，该程序提供了一种简单、可靠且定量的方法来分类和描述纹状细胞。除此之外，研究还表明：(a) 许多纹状细胞具有相当窄的空间带宽；(b) 在给定的视网膜离心率下，峰值频率的分布涵盖了很宽的频率范围；这些发现支持了基本的多通道概念。纹状皮层水平上出现的方向调谐和空间频率调谐（呈正相关）表明，这些细胞最好被视为二维空间滤波器。
