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- W3047905154 abstract "Abstract In order to interpret animal behaviour we need to understand how they see the world. As colour discrimination is almost impossible to test directly in animals, it is important to develop theoretical models based in the properties of visual systems. One of the most successful is the receptor noise-limited (RNL) model, which depends only on the level of noise in photoreceptors and opponent mechanisms. Here optimal colour discrimination properties are obtained using information theoretical tools, for the early stages of visual systems with and without colour opponent mechanisms. For most biologically relevant conditions the optimal discrimination function of an ideal observer coincides with the one obtained with the RNL model. Many variants of the model can be cast into the same framework, which permits meaningful comparisons across species. For example, it is shown that the presence of opponency seems to be the preferred hypothesis for bees, but not for budgerigars. Since this is a consequence of the presence of oil droplets, this could also be true for most other species of birds." @default.
- W3047905154 created "2020-08-13" @default.
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- W3047905154 date "2020-08-10" @default.
- W3047905154 modified "2023-10-07" @default.
- W3047905154 title "Colour vision and information theory: the receptor noise-limited model implies optimal colour discrimination by opponent channels" @default.
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- W3047905154 doi "https://doi.org/10.1101/2020.08.07.242065" @default.
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