Cortical magnification in human visual cortex parallels task performance around the visual field.
Cortical magnification in human visual cortex parallels task performance around the visual field.
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DOI：
10.7554/elife.67685
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发表时间：
2021-08-03
期刊：
影响因子：
7.7
通讯作者：
Winawer J
中科院分区：
文献类型：
--
作者：
Benson NC;Kupers ER;Barbot A;Carrasco M;Winawer J
人类视觉具有显著的径向不对称性，许多任务的性能随刺激极角急剧变化。性能通常在水平子午线上比垂直子午线好，并且在较低的垂直子午线上比较高的垂直子午线好，并且这些不对称性随着偏离垂直子午线而逐渐减小。在这里，我们报告皮质放大率在一个良好的角度分辨率在视野周围。这种精确度使得能够比较皮质放大率和行为之间、皮质放大率和视网膜细胞密度之间以及双胞胎对的皮质放大率之间的差异。我们发现，在163名受试者中测量的人类初级视觉皮层的皮层放大率在视野周围变化很大，其模式与行为相似。皮质中的这些径向不对称性比视网膜中的大，并且它们在同卵双生子之间是相关的。这些发现表明皮质地形和行为之间的紧密联系，并建议视野不对称部分遗传。
Human vision has striking radial asymmetries, with performance on many tasks varying sharply with stimulus polar angle. Performance is generally better on the horizontal than vertical meridian, and on the lower than upper vertical meridian, and these asymmetries decrease gradually with deviation from the vertical meridian. Here, we report cortical magnification at a fine angular resolution around the visual field. This precision enables comparisons between cortical magnification and behavior, between cortical magnification and retinal cell densities, and between cortical magnification in twin pairs. We show that cortical magnification in the human primary visual cortex, measured in 163 subjects, varies substantially around the visual field, with a pattern similar to behavior. These radial asymmetries in the cortex are larger than those found in the retina, and they are correlated between monozygotic twin pairs. These findings indicate a tight link between cortical topography and behavior, and suggest that visual field asymmetries are partly heritable.