The Mystery of Hypnagogia

Posted by Ryan Hurd on December 10, 2010  |  17 Comments

Hypnagogia is the imagery, sounds and strange bodily feelings that are felt at “sleep onset.” This is a simplification though, as researchers have noted hypnagogic imagery in the lab at periods of quiet wakefulness as well as stage 1 sleep. Others have correlated hypnagogia with pre-sleep alpha waves and also REM intrusion into sleep onset. [...]