If you’ve ever watched someone while they sleep — in a non-creepy way, we hope — you may have noticed that their eyes are actively moving. Why is that? A new study out of the University of California San Francisco found that “when our eyes move during REM sleep, we’re gazing at things in the dream world our brains have created.” It was once thought that these movements were random and just a way to keep our eyelids lubricated. According to Massimo Scanziani, PhD and senior author of the study, their study involving mice “showed that these eye movements aren’t random. They’re coordinated with what’s happening in the virtual dream world of the mouse.”
Why Do Our Eyes Move During Sleep?
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