Linked from
The 12 pages that link to Rapid eye movement sleep, each with the reason it gives.
SleepBroader topic: Its distinctive brain activity and muscle paralysis contrast with non-REM sleep.
NarcolepsyNarrower topic: Narcolepsy can bring REM features unusually soon after sleep begins.
Lucid dreamingRelated: Most verified lucid dreams occur during this sleep stage.
SomnologyBroader topic: It is one of the major stages examined in sleep biology.