hypnopompic« Back to Glossary IndexHypnopompic refers to the transition from sleep to wakefulness. Related Articles: Guide for Sleep & Research Study CentersConsiderations for ProfessionalsGlossary: hypnagogic hallucinationsGlossary: narcolepsyIt’s a Fine Line Between Type 2 Narcolepsy and Idiopathic Hypersomnia… and It’s Getting Even Finer