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also hyp·no·gog·ic  (hĭp′nə-gŏj′ĭk, -gō′jĭk)
1. Inducing sleep; soporific.
2. Of, relating to, or occurring in the state of intermediate consciousness preceding sleep: hypnagogic hallucinations.

[French hypnagogique : Greek hupnos, sleep; see hypno- + Greek agōgos, leading (from agein, to lead; see ag- in Indo-European roots).]


(ˌhɪpnəˈɡɒdʒɪk) or


(Psychology) psychol of or relating to the state just before one is fully asleep. See also hypnagogic image, hypnopompic
[C19: from French hypnagogique; see hypno-, -agogic]


(ˌhɪp nəˈgɒdʒ ɪk, -ˈgoʊ dʒɪk)

1. of or pertaining to the period of drowsiness between wakefulness and sleep: hypnagogic hallucinations. Compare hypnopompic.
2. inducing drowsiness.
[1885–90; < French hypnagogique; see hypn-, -agogue, -ic]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.hypnagogic - sleep inducing
depressant - capable of depressing physiological or psychological activity or response by a chemical agent


a. hipnagógico-a.
1. adormecedor-a, que induce el sueño;
2. que experimenta alucinaciones o sueños antes de perder el conocimiento o de pasar a un sueño profundo.
References in periodicals archive ?
These poems are less invested in explicit communication than in the oddities of the hypnagogic state, in between the sleeping and waking lives.
At first it felt like I was in some hypnagogic nightmare, where monsters would grab me from behind and I struggle to escape.
Narcolepsy is characterized by excessive sleepiness, cataplexy, hypnagogic hallucinations, and sleep paralysis during the rapid eye movement period of sleep.
Nathaniel Hawthorne s short story "The May-Pole of Merry Mount" is a work containing several boundaries and liminal spaces which reflect the hypnagogic state between sleep and consciousness.
SLEEP 'STARTS' THAT feeling of falling that jerks you awake just as you're drifting off is also known as hypnagogic jerks.
Sleep starts - also known as hypnagogic jerks - are just part of the process of moving from awake to asleep, explains Dr Jason Ellis, Director of Northumbria Centre for Sleep Research.
Sacks notes that hypnagogic (just before sleep) images are similar to hallucinations and are estimated to occur in the majority of people.
This approach employed independent auditory feedback of two slow brain-wave frequencies, alpha (8 to 13 Hz) and theta (4 to 8 Hz) in an eyes-closed condition to produce a hypnagogic state.
MarronA[c]'s journey leads to untamed, hypnagogic landscapes: a plasterwork factory, the shanties, and a brothel populated with Evas especially resound in their excess.
Additional safety issues in trials included excessive daytime sleepiness, impaired driving, suicidal ideation, sleep paralysis, hypnagogic /hypnopompic hallucinations, and cataplexy-like symptoms.