<prompt> The Non-REM NREM sleep is commonly associated with:Frequent dreamingFrequent penile erectionsIncreased blood pressureNight terrors  <response>: D i.e. Night terrorsNocturnal penile tumuescence occurs in REM SleepQ, it is a normal phenomenon, occurring 100 min night Nocturnal penile tumescence Early morning erection are used to distinguish between organic psychogenic impotence as these are preserved in psychogenic impotenceQ. 