Neurons in the pigeon visual network discriminate between faces, scrambled faces, and sine grating images.
Neurons in the pigeon visual network discriminate between faces, scrambled faces, and sine grating images.
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DOI：
10.1038/s41598-021-04559-z
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发表时间：
2022-01-12
影响因子：
4.6
通讯作者：
Colombo M
中科院分区：
文献类型：
--
作者：
Clark W;Chilcott M;Azizi A;Pusch R;Perry K;Colombo M
区分对象类别（例如，同种、食物、潜在的捕食者）是灵长类和鸟类视觉系统的关键功能。我们研究了在猴子的腹侧流中是否也存在类似的等级组织来处理面孔，在鸟类的视觉系统中。我们进行了电生理记录从鸽子Wulst的丘脑途径，除了内皮层（ENTO）和mesopallium ventrolateralale（MVL）的tectofugal途径，而鸽子看到的图像的脸，混乱的控制，和正弦光栅。更大比例的MVL神经元发射的刺激，和线性判别分析表明，群体反应的MVL神经元之间的区别与更大的容量比ENTO和Wulst神经元的刺激。虽然MVL神经元表现出最大的反应选择性，相反，灵长类动物系统没有神经元强烈的脸选择性和一些最好的反应混乱的图像。这些发现表明，MVL主要参与处理图像的局部特征，就像早期视觉皮层一样。
Discriminating between object categories (e.g., conspecifics, food, potential predators) is a critical function of the primate and bird visual systems. We examined whether a similar hierarchical organization in the ventral stream that operates for processing faces in monkeys also exists in the avian visual system. We performed electrophysiological recordings from the pigeon Wulst of the thalamofugal pathway, in addition to the entopallium (ENTO) and mesopallium ventrolaterale (MVL) of the tectofugal pathway, while pigeons viewed images of faces, scrambled controls, and sine gratings. A greater proportion of MVL neurons fired to the stimuli, and linear discriminant analysis revealed that the population response of MVL neurons distinguished between the stimuli with greater capacity than ENTO and Wulst neurons. While MVL neurons displayed the greatest response selectivity, in contrast to the primate system no neurons were strongly face-selective and some responded best to the scrambled images. These findings suggest that MVL is primarily involved in processing the local features of images, much like the early visual cortex.
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