24 hour sleep-wake pattern actigraph active sleep advanced sleep phase syndrome agrypnia alpha activity alpha-delta sleep alpha intrusion alpha rhythm alpha sleep apnea apnea-hypopnea index apnea index arise time arousal arousal disorder ASPS automatism awakening bedtime beta activity beta rhythm bi-PAP Breathing-Related Sleep Disorder bruxism cataplexy central sleep apnea Cheyne-Stokes respiration chronobiology chunking circadian rhythm Circadian Rhythm Sleep Disorder circadian time circasemidian rhythm conditioned insomnia constant routine CPAP CSA cycle deep sleep delayed sleep phase delta activity delta sleep stage dim-light melatonin onset DIMS disturbance in maintaining sleep diurnal DLMO drowsiness Dyssomnias early morning arousal EDS EEG electroencephalogram electromyogram electro-oculogram EMG end-tidal carbon dioxide entrainment EOG epoch excessive daytime sleepiness excessive sleepiness extrinsic sleep disorders final awakening final wake-up first-night effect fragmentation free-running hypercapnic central sleep apnea Hypersomnia hypersomnolence hypnagogic hypnagogic hallucination hypnagogic startle hypnic jerk hypnogram hypnopompic hypnopompic hallucination hypopnea initial insomnia Insomnia into bed time intrinsic circadian period intrinsic sleep disorders Jactatio capitis jet lag K-alpha K complex light-dark cycle light sleep lucid dream maintenance of wakefulness test major sleep episode melatonin microsleep middle insomnia montage movement arousal movement time MSLT multiple sleep latency test muscle tone MWT myoclonus nap Narcolepsy nightmare Nightmare Disorder nocturnal confusion nocturnal dyspnea nocturnal penile tumescence nocturnal sleep nonhypercapnic central sleep apnea non rapid eye movement sleep non-REM-REM sleep cycle non-REM sleep non-REM sleep intrusion non-REM sleep period non-REM stage 1 sleep non-REM stage 2 sleep non-REM stage 3 sleep non-REM stage 4 sleep NPT NREM sleep obstructive sleep apnea Ondine's curse paradoxical sleep Parasomnias paroxysm paroxysmal nocturnal dyspnea period periodic leg movement periodic limb movements of sleep phantasmagoria phase advance phase delay phase response curve phase transition phasic event photoperiod Pickwickian PLM PLM-arousal index PLM index PLM percentage PLMS PND polysomnogram polysomnograph polysomnography PRC premature morning awakening protocol quiet sleep rapid eye movement sleep RDI REM density REM sleep REM sleep behavior disorder REM sleep episode REM sleep intrusion REM sleep latency REM sleep onset REM sleep recovery respiratory disturbance index restlessness rhythm RSBD saw-tooth waves SCN siderealism siesta sleep apnea sleep architecture sleep continuity disturbance sleep cycle sleep diary sleep efficiency sleep episode sleep hygiene sleepiness sleep interruption sleep latency sleep log sleep-maintenance insomnia sleep mentation sleep onset sleep onset REM period sleep paralysis sleep pattern sleep-related erections sleep spindle sleep stage 1 sleep stage 2 sleep stage 3 sleep stage 4 sleep stage demarcation sleep stage episode sleep stages sleep startle sleep structure sleep talking Sleep Terror Disorder sleep-wake cycle sleep-wake schedule disorder sleep-wake shift sleep-wake transition disorder Sleepwalking Disorder slow wave sleep snoring somnambulism somniloquy somnolence SOREMP spindle REM stage 1 sleep stage 2 sleep stage 3 sleep stage 4 sleep stages SWS sundown syndrome suprachiasmatic nucleus synchronized tau terminal insomnia theta activity total recording time total sleep episode total sleep time trace alternant TRT TST twitch vertex sharp transient wake time zeitgeber