Local and global attention are mapped retinotopically in human occipital cortex
Local and global attention are mapped retinotopically in human occipital cortex
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DOI：
10.1073/pnas.98.4.2077
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发表时间：
2001-02-13
影响因子：
11.1
通讯作者：
Tootell, RBH
中科院分区：
文献类型：
--
作者：
Sasaki, Y;Hadjikhani, N;Tootell, RBH
临床证据表明，局部和整体注意力的控制机制在颞顶叶皮层中是偏侧的。然而，在人类的枕叶（视觉）皮层中，局部/全局注意力偏侧化的证据是有争议的。为了澄清这一问题，我们使用功能性磁共振成像来绘制人类枕叶皮层的活动，在局部和全局注意力，持续的视觉固定。数据分析在一个扁平的皮质格式，相对于地图的视网膜和空间频率峰值调谐，无论是本地或全球的注意是偏侧的枕叶皮层，相反，本地注意和全球的注意似乎是特殊情况下的视觉空间注意，这是映射一致的地图视网膜和空间频率调谐，在多个视觉皮层区域。
Clinical evidence suggests that control mechanisms for local and global attention are lateralized in the temporal-parietal cortex. However, in the human occipital (visual) cortex, the evidence for lateralized local/global attention is controversial. To clarify this matter, we used functional MRI to map activity in the human occipital cortex, during local and global attention, with sustained visual fixation. Data were analyzed in a flattened cortical format, relative to maps of retinotopy and spatial frequency peak tuning, Neither local nor global attention was lateralized in the occipital cortex, Instead, local attention and global attention appear to be special cases of visual spatial attention, which are mapped consistently with the maps of retinotopy and spatial frequency tuning, in multiple visual cortical areas.