Quote Originally Posted by Shift View Post
Thanks for digging up these nice references, Shift.

And here is a great and easy read that I found linked on that site that is informative about REM in general:

http://www.ajpe.org/legacy/pdfs/aj620216.pdf

Best part:

"Generally, REM dreams are longer, more visual, more bizarre, and not as related to actual life events. Those dreams in which Elvis is skateboarding with your mother but it's not really your mother, it's really your cat, and suddenly Elvis has turned into Bullwinkle, although he still sings very well, is probably a REM sleep dream. Or incipient mental illness."
Yes, this is generally the case. If you read a description of a vivid, clearly recalled dream it's most likely an REM dream. But in a certain percentage of cases it will be an NREM dream. Studies disagree on how big this percentage is, but the suggested numbers are in the range 5-30%.