Large-scale cortical displacement of a human retinotopic map.
Large-scale cortical displacement of a human retinotopic map.
复制标题
人类视网膜专题图的大规模皮质位移。
DOI：
10.1097/00001756-200201210-00013
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发表时间：
2002
期刊：
影响因子：
1.7
通讯作者：
HartJr,John
中科院分区：
文献类型：
--
作者：
Slotnick,ScottD;Moo,LaurenR;Krauss,Gregory;HartJr,John
本研究的目的是确定视网膜组织的先天性皮质发育不全和正常的视觉功能的患者。使用功能性磁共振成像（fMRI），详细的视网膜定位图对应的四个视野象限投射到皮质表面。与对照组相似，右上视野映射到腹侧左半球，并在视网膜上组织。右下视野的皮质代表也是视网膜定位组织的，但向前内侧移位了许多厘米。此外，整个左视野在两个半球的非retinotopically组织的岛屿。这些结果表明，retinotopic地图可以转移的位置和地形说明皮质重组可能是由于皮质发育不全或功能位移。
The aim of the current study was to determine the retinotopic organization of a patient with congenital cortical dysgenesis and normal visual function. Using functional magnetic resonance imaging (fMRI), detailed retinotopic maps corresponding to the four visual field quadrants were projected onto cortical surfaces. Similar to control subjects, the upper right visual field mapped onto ventral left hemisphere and was retinotopically organized. The lower right visual field's cortical representation was also retinotopically organized, yet was displaced many centimeters anteriomedially. Moreover, the entire left visual field was represented in non-retinotopically organized islands in both hemispheres. These results indicate retinotopic maps can shift in both location and topography illustrating cortical reorganization presumably due to either cortical dysgenesis or functional displacement.