This is the 1st time I've heard of this. A doc said there were distinct differences in content of nREM dreams & REM dreams. There are dreams features that appear almost exclusively in one or other type of dream state. The most distinctive telltale features being-
-dreaming about people, places you know really well
-dreams that feel like a movie, i.e. there is a "story line"
-have no familar people or "characters" that you know well
What do you think? Is this inline with what you know or experience? Can you know whether you've likely been mostly REMming or nREMming your hours away by recalling if you've dreamed about someone you know? I'm looking online for the research to back up this idea. I guess I believed it was only higher or lower dream recall that could be positively correlated to REM or nREM. Since I spend so many hours struggling btwn sleep/dreaming/waking up in the mornings, I've been tossing this idea in my head around alone & I'm curious to hear what anyone else has to say 'bout it!