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hypnagogic hallucination (imagery)Vivid sensory images occurring at sleep onset, but particularly vivid with sleep-onset REM periods. A feature of narcoleptic naps when the onset occurs with REM sleep.* Also: narcolepsy, hypnopompic, sleep paralysis
*Reprinted with permission from: Culebras, Antonio Clinical Handbook of Sleep Disorders Hardcover © 1996 Butterworth-Heinemann |
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