Gallant J L, Braun J, Van Essen D C
Division of Biology, California Institute of Technology, Pasadena 91125.
Science. 1993 Jan 1;259(5091):100-3. doi: 10.1126/science.8418487.
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.
模式识别的神经基础是视觉神经科学中的一个核心问题。在猕猴的V4区域记录了单个细胞对三类基于空间导数算子的周期性刺激的反应：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%对极坐标或双曲线（非笛卡尔）光栅的反应明显比对笛卡尔光栅的反应更强，只有8%对笛卡尔光栅表现出明显偏好。在对非笛卡尔光栅有选择性的细胞中，那些偏好同心光栅的细胞最为常见。对非笛卡尔光栅有选择性的细胞可能构成模式识别和表面形状表征的一个重要中间阶段。
