ARRANGEMENT OF OCULAR DOMINANCE COLUMNS IN HUMAN VISUAL-CORTEX
ARRANGEMENT OF OCULAR DOMINANCE COLUMNS IN HUMAN VISUAL-CORTEX
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DOI：
10.1001/archopht.1990.01070090127054
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发表时间：
1990-07-01
影响因子：
--
通讯作者：
DEMONASTERIO, FM
中科院分区：
文献类型：
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作者：
HORTON, JC;DAGI, LR;DEMONASTERIO, FM
对2例1只眼死前致盲的枕叶尸检标本进行细胞色素氧化酶活性检测，研究人眼初级视皮层中眼优势柱的排列。通过在处理前人为地使皮质变平，有可能重建由遍及大部分初级视觉皮质的眼优势柱形成的图案。这些柱子形成宽约500微米到1000微米的不规则平行条纹的马赛克(右眼柱加左眼柱长1到2毫米)，与初级视觉皮质的边界成直角。柱子靠近初级视觉皮质的边界较宽，在中央视野的表示范围内。在周边视野的表示中，同侧眼睛的眼优势列变得支离破碎，直到它们在单眼新月形表示的边界完全消失。人类视觉皮质中眼优势柱的排列与猕猴的模式非常相似，尽管人类的眼优势柱更宽。
The arrangement of the ocular dominance columns in the human primary visual cortex was studied by examining cytochrome oxidase activity in autopsy specimens of occipital lobes obtained from two patients who became blind in one eye before death. By artificially flattening the cortex before processing, it was possible to reconstruct the pattern formed by the ocular dominance columns throughout most of the primary visual cortex. The columns form a mosaic of irregular parallel stripes about 500 .mu.m to 1000.mu.m wide (right eye column plus left eye column measures 1 to 2 mm), oriented at right angles to the boundary of the primary visual cortex. The columns are wider near the boundary of the primary visual cortex and within the representation of the central visual field. In the representation of the peripheral visual field, the ocular dominance columns of the ipsilateral eye become fragmented until they disappear altogether at the border of the monocular crescent representation. The arrangement of ocular dominance columns in the human visual cortex is very similar to the pattern reported in the macaque monkey, although the columns in humans are wider.