Dream Hunter Rem – All About Dreams

An anime character, Rem the Dream Hunter, explains dreams in Japanese with English subtitles. The supporting cast, her kitten and puppy, are aptly named Alpha and Beta, respectively.

What are some of the topics or content found in dreams according to Rem? Rem suggests nightmares may occur during Non-REM sleep. How could a sleep researcher provide evidence for this suggestion? What are the four wave patterns that occur during sleep? Which wave is typical during deep sleep?