Visual processing is specific to animals

It is well known that animals have a special meaning for humans, and in biology humans have coexisted with animals for a long time. From the ancestors of human beings there has been an inseparable relationship with animals. And this relationship also makes the human visual system seem to have a more special visual processing mechanism for animals than other targets. To find out whether this mechanism exists only in animals, we performed an experiment. The experiment was a two forced choice (2-AFC) task. Since the scene has an effect on object recognition, we will use animal stimuli without background for comparison experiments with non-animal stimuli. We mixed animal stimulus images and non-animal stimulus images in a disordered manner to form stimulus image sets (50 images each), all of which were without background. Our results showed that subjects had faster reaction times for the animal stimulus pictures than for the non-animal stimulus images, with 524 ms for the animal stimulus pictures and 547 ms for the nonanimal stimulus pictures. The subjects' correct judgment rate for animal stimulus images was higher than that for nonanimal stimulus images, with 96.1% for animal stimulus images and 91.6% for non-animal stimulus images.