Each night, our brains cycle through hours of activity that remain surprisingly mysterious. Even though much of that time is spent dreaming, scientists still don't fully understand what the brain is ...
A REM sleep study shows the brain turns inward, responding more strongly to heartbeats than sounds while we dream.
Neuroscientists studying the shifts between sleep and awareness are finding many liminal states, which could help explain the disorders that can result when sleep transitions go wrong Yasemin ...
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