Back in the 1950s, scientists discovered REM sleep, or rapid eye movement, the part of sleep where dreaming occurs.
But why exactly our eyes make those rapid eye movements has been shrouded in mystery, until now.
Back in the 1950s, scientists discovered REM sleep, or rapid eye movement, the part of sleep where dreaming occurs.
But why exactly our eyes make those rapid eye movements has been shrouded in mystery, until now.