Zebrafish Differentially Process Color across Visual Space to Match Natural Scenes
Zebrafish Differentially Process Color across Visual Space to Match Natural Scenes
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DOI：
10.1016/j.cub.2018.04.075
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发表时间：
2018-07-09
期刊：
影响因子：
9.2
通讯作者：
Baden, Tom
中科院分区：
文献类型：
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作者：
Zimmermann, Maxime J. Y.;Nevala, Noora E.;Baden, Tom
动物的眼睛已经进化到处理行为上重要的视觉信息，但视网膜如何处理视觉空间中的统计不对称仍然知之甚少。使用高光谱成像领域，在体内2-光子成像的视网膜神经元，和解剖，在这里，我们表明，幼虫斑马鱼使用高度各向异性的视网膜不对称调查他们的自然视觉世界。首先，不同的神经元支配着眼睛的不同部分，并与内部视网膜功能的系统性转变有关：在动物上方，自然界中几乎没有颜色，视网膜回路在很大程度上是无色的。相反，较低的视野和地平线是色彩丰富的，并且主要由色彩和色彩对立电路进行调查，这些电路在光谱上与自然界中的主导色轴相匹配。第二，在水平和较低的视野，双极细胞终端编码无色和颜色对手的视觉功能系统地安排到不同的层的内层视网膜。第三，在前方地平线以上，高增益紫外线系统搭载在视网膜电路上，可能支持猎物捕获。
Animal eyes have evolved to process behaviorally important visual information, but how retinas deal with statistical asymmetries in visual space remains poorly understood. Using hyperspectral imaging in the field, in vivo 2-photon imaging of retinal neurons, and anatomy, here we show that larval zebrafish use a highly anisotropic retina to asymmetrically survey their natural visual world. First, different neurons dominate different parts of the eye and are linked to a systematic shift in inner retinal function: above the animal, there is little color in nature, and retinal circuits are largely achromatic. Conversely, the lower visual field and horizon are color rich and are predominately surveyed by chromatic and color-opponent circuits that are spectrally matched to the dominant chromatic axes in nature. Second, in the horizontal and lower visual field, bipolar cell terminals encoding achromatic and color-opponent visual features are systematically arranged into distinct layers of the inner retina. Third, above the frontal horizon, a high-gain UV system piggybacks onto retinal circuits, likely to support prey capture.