THE ORIENTATION AND DIRECTION SELECTIVITY OF CELLS IN MACAQUE VISUAL-CORTEX
THE ORIENTATION AND DIRECTION SELECTIVITY OF CELLS IN MACAQUE VISUAL-CORTEX
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DOI：
10.1016/0042-6989(82)90112-2
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发表时间：
1982-01-01
期刊：
影响因子：
1.8
通讯作者：
HEPLER, N
中科院分区：
文献类型：
--
作者：
DEVALOIS, RL;YUND, EW;HEPLER, N
定量数据上的取向和方向特异性的反应在猕猴纹状体皮质细胞。有一个双峰分布的方向特异性和nondirection-specific细胞，在每个类中具有类似的方向调整。细胞的取向带宽范围为6°至360°的半振幅（即无取向调谐），中值接近40°。中心凹旁皮层和简单复杂子样本显示出相似的方向带宽范围以及相似的中位数（带宽比猫皮层中发现的带宽稍宽）。中心凹子样本和高空间频率子样本比倾斜子样本具有更多的水平和垂直最佳方向。大多数细胞对某些方向表现出抑制，对另一些方向则表现出兴奋。最小反应方向通常与最佳方向成小于90°，表明最大抑制邻近兴奋方向。三个简单的感受野模型被证明是不同的，在他们的能力来解释这些结果。
Quantitative data are presented on the orientation and direction specificity of the responses of cells in macaque monkey striate cortex. There is a bimodal distribution of direction-specific and nondirection-specific cells, with similar orientation tuning in each class. Cells range in orientation bandwidth at half amplitude from 6° to 360° (i.e. no orientation tuning), with a median near 40°. Fovealparafoveal and simple-complex subsamples show similar ranges of orientation bandwidths as well as similar medians (the bandwidths being somewhat broader than those found in cat cortex). The foveal subsample and a high-spatial-frequency subsample have more horizontal and vertical optimal orientations than oblique ones. Most cells show inhibition to some orientations, as well as excitation to others. Minimum-response orientations are generally less than 90° from the optimal orientation—indicating maximum inhibition adjacent to the excitatory orientations. Three simple receptive field models are shown to differ in their abilities to account for these results.