Question

Though it is possible that REM sleep and dreaming are not necessary in the adult, REM deprivation studies seem to suggest otherwise. Why would REM pressure increase with deprivation if the system is unimportant in the adult?

Answer 1

Answer:

Rapid eye movement sleep (REM) may be defined as the the phase of the sleep that are unique to the mammals. This sleep is marked by the muscle tone.  

The REM leads to the increase in pressure with deprivation.  This leads to the increase in the rapid eye movement and plays an important role in the REM sleep and dreaming of the individual and quite necessary in the adult.