Medical Definition of Pre-sleep dream
Pre-sleep dream: Also called a hypnagogic hallucination, this type of dream is characteristically vivid and occurs as one is falling asleep or awakening.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 7/1/2016
Medical Dictionary Definitions A - Z
Search Medical Dictionary
- Myths and Facts About Obstructive Sleep Apnea
- Ways to Boost Your Energy
- Does ADHD Cause Sleep Problems?