A comparison of 138 species finds that dragonflies perceive changes in their environment five times faster than humans and 400 times faster than starfish
Fast-moving creatures – especially small animals, animals that fly and top ocean predators – perceive time more quickly than others. That is, they can process more frames per second than slow-moving animals lower in the food chain, such as starfish, according to a comparison of more than 100 species.at the University of Galway in Ireland, who presented the results at a meeting of the British Ecological Society on 20 December.
He and his colleagues began by reviewing previously published research on the flicker fusion test, a common measure of the rate at which animals perceive the passage of time. During the test, researchers increase the frequency of a flashing light until an animal sees it as a continuous glow, indicated by the reaction of light receptors in an animals’ retina.“It’s kind of like measuring the frame rate of your eyes,” says Healy.
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