Hypnagogia and Hypnopompia
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. The truth is that the wake-sleep transition is still not understood. And neither are its trippy visuals. whispy lights, multi-dimentional geometric objects, or a sudden image like a stranger’s face Few people remember hypnagogic imagery. Strange noises, voices and rushing sounds are typical, as well as weird mechanistic sounds like beeps and boops. Some hear music — I personally have had lucid hypnagogic orchestras from time to time, with the ability to listen passively or focus on a particular instrument to induce a solo. Entoptica - by Ryan Hurd, 2005, acrylic: inspired by my hypnagogic imagery Some people are haunted by the hypnagogic imagery.
Related: Sleep and Dreams