<prompt> Which one of the following phenomenon is closely associated with slow wave sleep -DreamingSleep walkingAtoniaIrregular heart rate  <response>: Slow wave sleep stage 3 4 of NREM sleep disorders:- Sleepwalking somnambulism, night tenor sleep terror or pavomoctumus, Nocturnal enuresis, Bruxism teeth grinding, and sleep talking somniloquy.REM sleep eventsdisorder :- Nightmares, nocturnal penile tumescence, Narcolepsy. 