Retinotopy versus face selectivity in macaque visual cortex.
Retinotopy versus face selectivity in macaque visual cortex.
复制标题
猕猴视觉皮层的视网膜分布与面部选择性。
DOI：
10.1162/jocn_a_00672
复制
发表时间：
2014
影响因子：
3.2
通讯作者：
Tootell,RogerBH
中科院分区：
文献类型：
--
作者：
Rajimehr,Reza;Bilenko,NataliaY;Vanduffel,Wim;Tootell,RogerBH
视网膜组织是人类和非人类灵长类动物低层视觉皮层区域普遍存在的特性。在猕猴视觉皮层中，视网膜定位图延伸到腹侧视觉通路中的高阶区域，包括下颞叶（IT）皮层中的TEO区。IT皮层内的不同区域也对特定的对象类别（如面部）具有选择性。在这里，我们测试的地形关系，视网膜地形图和面孔选择性补丁在猕猴视觉皮层使用高分辨率的功能磁共振成像和视网膜地形图的面部刺激。面部选择性斑片内的不同子区域显示出（1）偏心率和极角的粗糙视网膜定位图，（2）对视野特定位置的视网膜定位偏差，或（3）非视网膜定位选择性。在一般情况下，区域沿着IT皮质的外侧凸性之间的视网膜定位图和面部选择性的重叠，与STS内的区域相比。因此，猕猴的面部斑块可以细分为具有可区分的视网膜定位特性的较小斑块。
Retinotopic organization is a ubiquitous property of lower-tier visual cortical areas in human and nonhuman primates. In macaque visual cortex, the retinotopic maps extend to higher-order areas in the ventral visual pathway, including area TEO in the inferior temporal (IT) cortex. Distinct regions within IT cortex are also selective to specific object categories such as faces. Here we tested the topographic relationship between retinotopic maps and face-selective patches in macaque visual cortex using high-resolution fMRI and retinotopic face stimuli. Distinct subregions within face-selective patches showed either (1) a coarse retinotopic map of eccentricity and polar angle, (2) a retinotopic bias to a specific location of visual field, or (3) nonretinotopic selectivity. In general, regions along the lateral convexity of IT cortex showed more overlap between retinotopic maps and face selectivity, compared with regions within the STS. Thus, face patches in macaques can be subdivided into smaller patches with distinguishable retinotopic properties.