ORGANIZATION OF CAT VISUAL-CORTEX AS INVESTIGATED BY CROSS-CORRELATION TECHNIQUE
ORGANIZATION OF CAT VISUAL-CORTEX AS INVESTIGATED BY CROSS-CORRELATION TECHNIQUE
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DOI：
10.1152/jn.1981.46.2.202
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发表时间：
1981-01-01
影响因子：
2.5
通讯作者：
TANAKA, K
中科院分区：
文献类型：
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作者：
TOYAMA, K;KIMURA, M;TANAKA, K
在猫的视觉皮层（17区），细胞之间的相互作用的各种反应类型（简单，复杂，hypercomplex I，hypercomplex II和细胞与一个专门的on（eon-细胞）或off区（eoff-细胞））进行了研究与交叉相关技术。共同兴奋、皮质内兴奋和皮质内抑制这3种神经元间连接的基本类型与反应类型、在皮质层中的位置以及在眼优势和定向列中的位置3个因素有关。常见的兴奋出现在所有组合的反应类型，除了那些含有超复合体II细胞。皮质内兴奋发生在只有2个组合：从复杂的复杂的细胞和复杂的超复杂II细胞。皮质内抑制也仅限于4种组合：从eon-或eoff-细胞到简单细胞，从简单细胞到复杂细胞，从eon-或eoff-细胞到复杂细胞，以及eon-和eoff-细胞之间。共同的兴奋中观察到的神经元对在几乎整个程度的层III-V。皮层内的兴奋施加从源细胞附近的边界层III和IV层II和III层中的目标细胞。用于皮质内抑制的源细胞局限于IV层的较深的一半，靶细胞局限于中间层的一部分，延伸200-300 μ m的垂直距离。共同的兴奋发生在神经元对，在几个方向列的距离，而皮质内的兴奋和抑制仅限于那些在相同或相邻的方向列。所有3种类型的神经元间的连接仅限于一个单一的眼优势柱。膝状体兴奋（共同兴奋的基础）显然是垂直和切向传播在一个相对较大的空间的视觉皮层和冲击共同对细胞的不同反应类型，而内在的皮质兴奋和抑制仅限于细胞的特定反应类型在一个小的皮质空间。膝状体输入可能为皮质细胞提供一般的光反应性，反应类型的分化主要取决于内在的皮质输入。
In the cat visual cortex (area 17), interactions between cells of various response types (simple, complex, hypercomplex I, hypercomplex II and cells with an exclusively on (eon-cells) or off area (eoff-cells)) were studied with cross-correlation techniques. The 3 basic types of interneuronal connectivities, common excitation, intracortical excitation and intracortical inhibition, were related to 3 factors: response types, locations in cortical layers and locations in ocular dominance and orientation columns. Common excitation appeared in all combinations of response types except for those containing a hypercomplex II cell. Intracortical excitation occurred in only 2 combinations: from a complex to a complex cell and from a complex to a hypercomplex II cell. Intracortical inhibition was also confined to 4 combinations: from an eon- or eoff-cell to a simple cell, from a simple to a complex cell, from an eon- or eoff-cell to a complex cell, and between eon- and eoff-cells. Common excitation was observed in neuronal pairs in almost the entire extent of layers III-V. Intracortical excitation was exerted from a source cell near the border between layers III and IV to target cells in layers II and III. Source cells for intracortical inhibition were confined to the deeper half of layer IV and target cells to a part of the middle layers extending for a perpendicular distance of 200-300 .mu.m. Common excitation occurred in neuronal pairs that were distanced across several orientation columns, while intracortical excitation and inhibition were restricted to those in the same or neighboring orientation columns. All 3 interneuronal types of connections were confined to a single ocular dominance column. Geniculate excitation (the basis for common excitation) apparently spreads both perpendicularly and tangentially in a relatively large space of the visual cortex and impinges commonly onto cells of diverse response types, while intrinsic cortical excitation and inhibition are restricted to cells of specific response types in a small cortical space. Geniculate input probably provides cortical cells with general photic responsiveness and differentiation of response types primarily depends on intrinsic cortical inputs.