What is another word for hypnagogic imagery?
Pronunciation: [hˌɪpnɐɡˈɒɡɪk ˈɪmɪd͡ʒɹˌi] (IPA) 
Hypnagogic imagery refers to the mental images that occur during the transitional state between wakefulness and sleep. These images may be colorful, vivid, and surreal, and can sometimes take on a dream-like quality. There are several synonyms for hypnagogic imagery, including hypnagogic hallucinations, sleep onset hallucinations, and lucid dreaming. These terms describe the perceptual experiences that can happen when one is falling asleep or waking up, and are often associated with altered states of consciousness. Whether defined as dream-like or hallucinatory, hypnagogic imagery is a fascinating phenomenon that has long intrigued scientists, artists, and lucid dreamers alike.
