Noun
a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep
Source: WordNetAccording to Hobson and other researchers, circuits in the brainstem are activated during REM sleep. Source: Internet
Aquatic mammal infants do not have REM sleep in infancy; citation REM sleep in those animals increases as they age. Source: Internet
Among different species, the more immature the baby is born, the more time it spends in REM sleep. Source: Internet
A newborn baby spends almost 9 hours a day just in REM sleep. Source: Internet
Behaviour and ecology Pair "dancing" Ostriches sleeping, with REM sleep and slow-wave sleep phases. citation Ostriches normally spend the winter months in pairs or alone. Source: Internet
Certain brain chemicals necessary for converting short-term memories into long-term ones are suppressed during REM sleep. Source: Internet