The body seems to need REM sleep as when, after a period of sleep deprivation, the body responds by spending more time in the REM stage with a corresponding decrease in stage four sleep as if trying to make up for some kind of deficit.
(The body; seems; ) (The body; to need; REM sleep) (the body; responds; by spending more time in the REM stage with a corresponding decrease in stage four sleep; T:after a period of sleep deprivation)
The body The body the body
seems to need responds
REM sleep
by spending more time in the REM stage with a corresponding decrease in stage four sleep T:after a period of sleep deprivation