Colour coding in the superior temporal sulcus of rhesus monkey visual cortex
Colour coding in the superior temporal sulcus of rhesus monkey visual cortex
复制标题
恒河猴视觉皮层颞上沟的颜色编码
DOI：
10.1098/rspb.1977.0065
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发表时间：
1977
期刊：
影响因子：
--
通讯作者：
S. Zeki
中科院分区：
文献类型：
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作者：
S. Zeki
在恒河猴中，上级颞沟的后堤形成了纹前视皮层的一部分，并且有两个区域，内侧区域和外侧区域，它们有各自独立的胼胝体连接。这两个区域的传入输入进行了研究的实验中，胼胝体被切断，标记的氨基酸被注入到其他视觉领域。用这种方法，我们发现17区投射到上级颞沟中两个胼胝体输入中较内侧的那一部分。相比之下，被更外侧的胼胝体输入占据的沟部分被发现接受来自第四视觉复合体的强烈投射，这是一个富含颜色编码细胞的区域。记录来自动物的上级颞沟中的单细胞，其中胼胝体先前已被切片。通过这种方法产生的退化被用来提供解剖标志，使我们能够分配细胞的外侧或内侧区域的沟。这样的记录显示，感受野的地形组织在侧沟的一部分，大多数细胞的颜色特异性。相比之下，细胞记录在该区域内的更内侧胼胝体补丁在这个沟的方向选择性，没有任何明显的颜色编码。从这些解剖-生理学结合的实验中得出结论，在上级颞沟中至少存在两个不同的区域，它们具有不同的传入联系和功能特性。
In the rhesus monkey, the posterior bank of the superior temporal sulcus forms part of the prestriate visual cortex and has two regions, a medial one and a lateral one, which have their own separate callosal connections. The afferent input to these two regions was studied in experiments where the corpus callosum was sectioned, and labelled amino acids were injected into other visual areas. By this method, it was found that area 17 projects to that part of the superior temporal sulcus occupied by the more medial of the two callosal inputs. By contrast, the part of the sulcus occupied by the more lateral callosal input was found to receive a strong projection from the fourth visual complex, an area rich in colour-coded cells. Recordings were made from single cells in the superior temporal sulcus in animals in which the corpus callosum had been sectioned previously. The degeneration produced by this procedure was used to provide anatomical landmarks enabling us to assign cells to the lateral or the medial regions of the sulcus. Such recordings revealed that receptive fields were topographically organized in the lateral part of the sulcus and that most cells were colour specific. By contrast, cells recorded from in the region of the more medial callosal patch within this sulcus were directionally selective, without any obvious colour coding. It was concluded from these combined anatomico-physiological experiments that there are at least two distinct regions in the superior temporal sulcus which have different afferent connections and functional properties.