Quote Originally Posted by ian 2411 View Post
Is this fact and or should i ask is it a proven fact and how was it measured in reality?
Dreams do not only occur in REM sleep but are largely considered to be more likely to occur in this period. Everyone dreams all the time, you only remember your dreams if you wake up while they are still fresh. If you progress cleanly from stage 1 - 4 - REM then REM - 4 - 1 without interruption not only do you feel better when you wake up but you also rarely remember your dreams. If you get disturbed in REM sleep you are more likely to have better recall of dreams. This is why fevers, illness and nightmares are often linked - disturbed sleep means more chance of remembering dreams.

This was tested by getting volunteers to undergo sleep studies. They went to sleep in the laboratory with EEG monitors on them and the stages of sleep were noted and they were asked to recall what dreams they had. They were woken up during specific stages of the sleep cycle to see if there were differences in their recall.

And this is not psychology or psychiatry but neurophysiology