What are some signs for when someone starts dreaming? (10 points to whoever gives a good answer)?

Question

Other than rapid eye movement, what are some signs or signals that show that someone is dreaming? I am hoping to do an experiment on if you can tell whether someone is asleep and/or dreaming without watching for rapid eye movement.

Answer 1

Person should be sound asleep. Like sleeping for minimum 1-2  hour, or more. sometimes people dreaming mumble words that are not understandable. It is difficult to find out when the sleeping person has "started" dreaming but there can be some indications like facial expressions to make out when in dreaming process.

Answer 2

Dreaming occurs in stage 4 sleep which is the deepest sleep...look for movements or speech and sudden increase in breathing...OH and change in facial expressions like there is some sort of interaction

Answer 3

rectal thermometer if their temp hits 98.5 degrees their dreaming

Answer 4

If someone is dreaming, normally, they don't move at all until it is over unless it is a scary dream. Also the person has no blanket covering them or anything like that; and makes small body movements depending on the motion of the dream and how clear it is to the person.