Treefrogs have noise-cancelling headphones built into their ears ...Middle East

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Treefrogs have noise-cancelling headphones built into their ears
A new paper suggests that the vibration of a frog’s lungs feeds back into the frog’s eardrums, reducing their sensitivity to certain frequencies in a process that scientists think is similar to how noise-cancelling headphones work. (Norman Lee/)Imagine that you’re a female frog. It’s mating time, and you’re choosing a male of your species. But you have a problem. How do you pick out your suitors’ calls from the cacophonous background noise—from, say, the rainbow of other frog species who live in your swamp?It turns out that at least some frogs might have their own built-in noise-cancelling features: Lungs.A new paper suggests that the vibration of a frog’s lungs feeds back into the frog’s ea

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