SELECTIVITY FOR POLAR, HYPERBOLIC, AND CARTESIAN GRATINGS IN MACAQUE VISUAL-CORTEX
SELECTIVITY FOR POLAR, HYPERBOLIC, AND CARTESIAN GRATINGS IN MACAQUE VISUAL-CORTEX
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DOI：
10.1126/science.8418487
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发表时间：
1993-01-01
期刊：
影响因子：
56.9
通讯作者：
VANESSEN, DC
中科院分区：
文献类型：
--
作者：
GALLANT, JL;BRAUN, J;VANESSEN, DC
模式识别的神经基础是视觉神经科学的中心问题。记录了猕猴 V4 区单细胞对基于空间导数算子的三类周期性刺激的反应：极坐标（同心和径向）、双曲线和传统正弦（笛卡尔）光栅。在测试的 118 个细胞中，16% 对极坐标或双曲（非笛卡尔）光栅的反应明显高于对笛卡尔光栅的反应，只有 8% 表现出对笛卡尔光栅的显着偏好。在对非笛卡尔光栅有选择性的细胞中，最喜欢同心光栅的细胞最为常见。对非笛卡尔光栅具有选择性的细胞可能构成模式识别和表面形状表示的重要中间阶段。
The neural basis of pattern recognition is a central problem in visual neuroscience. Responses of single cells were recorded in area V4 of macaque monkey to three classes of periodic stimuli that are based on spatial derivative operators: polar (concentric and radial), hyperbolic, and conventional sinusoidal (Cartesian) gratings. Of 118 cells tested, 16 percent responded significantly more to polar or hyperbolic (non-Cartesian) gratings than to Cartesian gratings and only 8 percent showed a significant preference for Cartesian gratings. Among cells selective for non-Cartesian gratings, those that preferred concentric gratings were most common. Cells selective for non-Cartesian gratings may constitute an important intermediate stage in pattern recognition and the representation of surface shape.