An investigation of differences between bird and primate vision

为了检验鸟类和灵长类动物视觉之间的物种差异，我比较了鸟类和灵长类动物的视觉辨别任务。在类别辨别任务中，研究了图像处理对鸽子和人类的影响。当鸽子的高频信息被移除时，这种区分就会被破坏，而当人类的低频信息被移除时，这种区分就会被破坏。我还发现，在鸟类和灵长类动物之间，冗余上下文对模式识别的影响是不同的。当模式被嵌入到特定的环境中时，灵长类动物的模式识别变得更容易，尽管它们是冗余的。相比之下，当这些模式被嵌入到相同的冗余环境中时，鸟类就很难识别了。这些结果表明，鸟类不能感知灵长类动物感知的整体。

In order to examine species differences between bird and primate vision, I compared birds withprimates in visual discrimination tasks. In a category discrimination task, effects of image manipulation were examined in pigeons and humans. The discrimination was disrupted when higher frequency information was removed in pigeons, whereas it was disrupted when lower frequency information was removed in humans. I also found differential effects of redundant contexts on pattern discrimination between birds and primates. The pattern discrimination became easier for primates when the pattern was embedded in certain contexts despite their redundancy. In contrast, it became difficult for birds when the patterns were embedded in the same redundant contexts. These results indicate that birds do not perceive the wholes that primates perceive.