Jacobs G H
Department of Psychology, University of California, Santa Barbara 93106.
Vision Res. 1990;30(3):387-97. doi: 10.1016/0042-6989(90)90081-u.
Dichromatic and trichromatic representatives from two genera of platyrrhine monkeys that show widespread color vision polymorphism (Saguinus--tamarins, Saimiri--squirrel monkeys) were tested for their abilities to make increment-threshold and flicker discriminations based on luminance and chromaticity differences. The details of these tests were arranged to attempt to emphasize the relative contributions to visual behavior of non-opponent and spectrally-opponent neural mechanisms. The results indicate that dichromatic and trichromatic monkeys differ only trivially on tests where performance is based on the contributions of non-opponent mechanisms, that the contribution of spectrally opponent mechanisms to the "brightness signal" is very similar in trichromatic and dichromatic monkeys, and that in increment-threshold discriminations where there are both chromaticity and luminance cues some test wavelengths yield superior performance for trichromats while others appear to favor the dichromat.
对阔鼻猴两个属中表现出广泛色觉多态性的二色视觉和三色视觉代表（狨属——狨猴，松鼠猴属——松鼠猴）进行了测试，以考察它们基于亮度和色度差异进行增量阈值和闪烁辨别的能力。这些测试的细节经过安排，试图强调非对立和光谱对立神经机制对视觉行为的相对贡献。结果表明，在基于非对立机制贡献的测试中，二色视觉和三色视觉的猴子仅有微小差异；光谱对立机制对“亮度信号”的贡献在三色视觉和二色视觉的猴子中非常相似；在既有色度线索又有亮度线索的增量阈值辨别中，一些测试波长下三色视觉者表现更优，而另一些波长则似乎对二色视觉者有利。
