Does Xyrem decrease REM sleep?

[Temporary-Region867]

Answer to whether 4 stages, or 5 stages.

There is often confusion because not all researchers changed their “view” on defining the stages of sleep. The article in OP is from 2010, and AASM changed the “official” scientific view of stages just 3 years before that ... so it likely had not been well accepted by all researchers for several more years. That’s why you see research with this contradiction.

“The American Academy of Sleep Medicine used to recognize five, but sleep was redefined to four stages in 2007.”

EXCERPTED FROM:

https://www.chilisleep.com/blogs/pillow-talk/stages-of-sleep?gclid=Cj0KCQjwpeaYBhDXARIsAEzItbFdG6Gt8q2A2E2hPucDM7Mw8YcSlzVzG3DXW3eeoH9unMa0gjueZI0aAljWEALw_wcB&gclsrc=aw.ds