Processing of color, form, and motion in macaque area V2
Processing of color, form, and motion in macaque area V2
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DOI：
10.1017/s0952523800007203
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发表时间：
1996-01-01
影响因子：
1.9
通讯作者：
Fenstemaker, SB
中科院分区：
文献类型：
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作者：
Gegenfurtner, KR;Kiper, DC;Fenstemaker, SB
我们研究了猕猴皮层V2区颜色的表征，以及颜色与其他刺激属性的关联。我们测量了单个V2神经元对颜色，运动和形式的选择性。V2区的大多数神经元具有方向选择性，其中约一半对颜色有选择性，少数细胞（约20%）对大小或方向有选择性。我们将这些生理测量结果与细胞相对于V2区细胞色素氧化酶（CO）隔室的解剖位置相关联。有一种倾向，颜色选择性细胞被发现更频繁地在薄条纹，但颜色选择性细胞也经常出现在厚条纹和条纹间。我们没有发现不同的CO隔间之间的颜色选择性的程度有差异。此外，颜色选择性和其他刺激属性的选择性之间没有负相关。我们发现许多细胞能够编码信息沿着一个以上的刺激维度，无论其位置相对于CO隔间。我们认为V2区在整合颜色、运动和形状信息方面起着重要作用。通过这种刺激属性的整合，可以实现视觉世界的线索不变表示。
We investigated the representation of color in cortical area V2 of macaque monkeys, and the association of color with other stimulus attributes. We measured the selectivity of individual V2 neurons for color, motion, and form. Most neurons in V2 were orientation selective, about half of them were selective for color, and a minority of cells (about 20%) were selective for size or direction. We correlated these physiological measurements with the anatomical location of the cells with respect to the cytochrome oxidase (CO) compartments of area V2. There was a tendency for color-selective cells to be found more frequently in the thin stripes, but color-selective cells also occurred frequently in thick stripes and inter-stripes. We found no difference in the degree of color selectivity between the different CO compartments. Furthermore, there was no negative correlation between color selectivity and selectivity for other stimulus attributes. We found many cells capable of encoding information along more than one stimulus dimension, regardless of their location with respect to the CO compartments. We suggest that area V2 plays an important role in integrating information about color, motion, and form. By this integration of stimulus attributes a cue-invariant representation of the visual world might be achieved.