voices
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Rest Easy: Did You Know Your Brain Is Designed to Tune Into Unfamiliar Voices While You Sleep?
Have you ever watched a duck sleep and wondered how it keeps one eye open? Ducks, like many other birds, sleep with one half of the brain awake while the other half sleeps. This is called “unihemispheric sleep” and allows the animal to monitor the environment for predators while getting the rest it needs. Advances…