A hypnopompic state (or hypnopomp) is the state of consciousness leading out of sleep, a term coined by the spiritualist Frederick Myers. Its twin is the
hypnagogicstate at sleep onset; though often conflated the two states are not identical. The hypnagogic state is rational waking cognition trying to make sense of non-linear images and associations; the hypnopompic state is emotional and credulous dreaming cognition trying to make sense of real world stolidity. They have a different phenomenological character. Depressed frontal lobe function in the first few minutes after waking - known as " sleep inertia" - causes slowed reaction time and impaired short-term memory. Sleepers often wake confused, or speak without making sense, a phenomenon the psychologist Peter McKeller calls "hypnopompic speech."
*T. Balkin, A. Braun, et al., “The process of awakening: A PET study of regional brain activity patterns mediating the reestablishment of alertness and consciousness,”"Brain", vol. 125, 2002, pp. 2308–19.
*P. Tassi and A. Muzet, “Sleep inertia,” "Sleep Medicine Review", vol. 4, no. 4, 2000, pp. 341–53.
*McKellar, P (1989). "Abnormal Psychology", Routledge.
*Cite book|chapter=The Hypnopompic|title=The Head Trip: Adventures on the Wheel of Consciousness|year=2007|isbn=978-0679314080|first=Jeff|last=Warren
Wikimedia Foundation. 2010.