Using glass patterns and fMRI to identify areas that process global form in macaque visual cortex
Using glass patterns and fMRI to identify areas that process global form in macaque visual cortex
复制标题
使用玻璃图案和功能磁共振成像来识别猕猴视觉皮层中处理全局形式的区域
DOI：
10.1167/2.7.285
复制
发表时间：
2001
影响因子：
2.9
通讯作者：
J. Movshon
中科院分区：
文献类型：
--
作者：
P. Tse;Augath Ma Smith Ma;T. Trinath;N. Logothetis;J. Movshon
我们已经使用功能成像方法来定位猕猴大脑中参与处理全局形状的区域。出于这个目的，自然物体不是理想的刺激，因为它们的形式定义特征难以隔离和控制。玻璃图案，通过将随机纹理中的每个点与指定空间偏移的另一个点配对而创建（Glass 1969, Nature），是有用的，因为形式是在具有相同局部统计的图案中定义的，纯粹是通过点对的全局排列。Wilson等人（1997，VR）表明，同心玻璃模式比其他模式处理效率更高，这表明存在高阶“分组”过滤器，可在局部过滤器中调整特定的激活模式。
We have used functional imaging methods to locate areas of the macaque brain involved in processing global form. For this purpose, natural objects are not ideal stimuli because their form-defining characteristics are difficult to isolate and control. Glass patterns, created by pairing each dot in a random texture with another at a specified spatial offset (Glass 1969, Nature), are useful because form is defined in patterns with identical local statistics purely by the global arrangement of dot pairs. Wilson et al (1997, VR) showed that concentric Glass patterns are processed more efficiently than other patterns, suggesting that there exist higher-order ‘grouping’filters tuned to particular patterns of activation among local filters.