hypnagogic hallucination


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Related to hypnagogic hallucination: narcolepsy, hypnopompic hallucination

hypnagogic hallucination

[¦hip·nə¦gäj·ik hə‚lüs·ən′ā·shən]
(psychology)
Mental images occurring normally while falling asleep.
References in periodicals archive ?
EDS contributed 25% of the model variance, while cataplexy contributed 10%, sleep attack about 2%, sleep onset paralysis about 2% and hypnagogic hallucinations about 1%.
Other historic facts supporting a diagnosis of narcolepsy include sleep fragmentation or disturbed nocturnal sleep, sleep paralysis, hypnagogic hallucinations, and family history.
Table 1 Frequency of symptoms occuring in patients with nacrolepsy (a) Symptom % of patients Excessive daytime sleepiness 100% Fragmented nightime sleep 90% Cataplexy 80% Hypnagogic hallucinations 70% Sleep paralysis 60% Automatic behaviors 50% (a)From Chaudhary BA, Husain I.
The recognition of two additional features, hypnagogic hallucinations (the onset of dreams while still awake) and sleep paralysis (a temporary loss of muscle tone or an inability to perform voluntary movements either at sleep onset or upon awakening), were added by Yoss and Daly in 1957.
The symptoms of narcolepsy include excessive daytime sleepiness, sudden loss of muscle control known as cataplexy, sleep paralysis and vivid hallucinations at the onset of sleep known as hypnagogic hallucinations.
Additionally, a person with narcolepsy may have cataplexy, sleep paralysis, and/or hypnagogic hallucinations.
The symptoms of narcolepsy include excessive daytime sleepiness, sudden loss of muscle control known as cataplexy, sleep paralysis, and vivid hallucinations at the onset of sleep known as hypnagogic hallucinations.
The four most common symptoms are excessive daytime sleepiness, cataplexy, sleep paralysis and hypnagogic hallucinations.