The results of the eye-popping study suggest cuttlefish see the world in surprisingly human ways
>>The team also presented the cephalopods with another set of shrimp projections, this time superimposed on backgrounds of colored patterns of dots, some bright, some dark. In humans, when one eye sees a pattern of bright and dark dots, and the other eye sees the inverse of the pattern—where the bright and dark dots are reversed—our brains have difficulty reconciling the differences, compromising depth perception. Remarkably, both praying mantises and cuttlefish are unfazed by these inverted background patterns. Rather than trying to come to grips with the conflicting intel, their brains just ignore it, and stereo vision proceeds unimpeded.<<
>>Feord thinks the less stringent types of stereo vision present in the praying mantis and cuttlefish could constitute a powerful advantage. By filtering out some of the clutter in their surroundings, these invertebrates can focus on what’s important: their prey. “Humans form a very complex image that gets refreshed over and over in the brain,” she says. “The cuttlefish and praying mantis just pick out the elements they need without getting bogged down in the details.”<<
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https://www.smithsonianmag.com/science-nature/scientists-velcroed-3d-glasses-cuttlefish-study-depth-perception-180973918/