BINOCULAR VISUAL MECHANISMS IN CORTICAL AREA-1 AND AREA-2 OF SHEEP
BINOCULAR VISUAL MECHANISMS IN CORTICAL AREA-1 AND AREA-2 OF SHEEP
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DOI：
10.1113/jphysiol.1976.sp011336
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发表时间：
1976-01-01
影响因子：
5.5
通讯作者：
WHITTERIDGE, D
中科院分区：
文献类型：
--
作者：
CLARKE, PGH;DONALDSON, IML;WHITTERIDGE, D
在绵羊的初级和次级视觉区（V1和V2）记录单位。他们被刺激双眼，使用可调节的棱镜来改变差异。V1细胞对差异非常小或为零的刺激反应最佳，但V2细胞经常喜欢交叉或不交叉的几度差异。V2中的许多细胞对视差特别有选择性，通常对单眼刺激没有反应。偏好相同差异的细胞出现在约400 μ m宽的离散列中。列之间的变化是由1只眼的感受野的阶跃位移引起的。在连续的列编码的差异似乎遵循一个规则的序列：交叉，零未交叉，零等，在V1和V2，细胞聚集，也许在列，根据他们的取向偏好和眼优势。在V2中，恒定视差列似乎与方向簇无关。
Units were recorded in the primary and secondary visual areas (V1 and V2) of the sheep. They were stimulated binocularly, using an adjustable prism to vary the disparity. Cells in V1 responded optimally to stimuli with very small or zero disparities, but cells in V2 frequently preferred disparities of several degrees crossed or uncrossed. Many cells in V2 were particularly selective to disparity, often giving no response to a monocular stimulus. Cells preferring the same disparity occurred in discrete columns, about 400 .mu.m wide. Changes between columns resulted from a step displacement of the receptive field of 1 eye. The disparities encoded in successive columns seemed to follow a regular sequence: crossed, zero uncrossed, zero, etc. In both V1 and V2, cells clustered, perhaps in columns, according to their orientation preference and ocular dominance. In V2, the constant disparity columns appeared to be independent of the orientation clusters.