脊椎动物
视网膜
视网膜
斑马鱼
生物
神经科学
彩色视觉
色阶
视网膜神经节细胞
解剖
进化生物学
人工智能
光学
视网膜神经节细胞
计算机科学
物理
遗传学
基因
生物化学
作者
Tom Baden,Daniel Osorio
出处
期刊:Annual review of vision science
[Annual Reviews]
日期:2019-09-15
卷期号:5 (1): 177-200
被引量:69
标识
DOI:10.1146/annurev-vision-091718-014926
摘要
The jawless fish that were ancestral to all living vertebrates had four spectral cone types that were probably served by chromatic-opponent retinal circuits. Subsequent evolution of photoreceptor spectral sensitivities is documented for many vertebrate lineages, giving insight into the ecological adaptation of color vision. Beyond the photoreceptors, retinal color processing is best understood in mammals, especially the blue ON system, which opposes short- against long-wavelength receptor responses. For other vertebrates that often have three or four types of cone pigment, new findings from zebrafish are extending older work on teleost fish and reptiles to reveal rich color circuitry. Here, horizontal cells establish diverse and complex spectral responses even in photoreceptor outputs. Cone-selective connections to bipolar cells then set up color-opponent synaptic layers in the inner retina, which lead to a large variety of color-opponent channels for transmission to the brain via retinal ganglion cells.
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