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Sleep related terms

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  • Nap

  • Short period of planned sleep generally obtained at a time separate from the major sleep period.

  • Narcolepsy

  • Sleep disorder characterized by excessive sleepiness, cataplexy, sleep paralysis, hypnogogic hallucinations, and an abnormal tendency to pass directly from wakefulness into REM sleep

  • Nasal Airflow/Nasal Ventilation

  • Recording of the complete respiratory cycle by measuring inspiratory and expiratory airflow

  • National Commission on Sleep Disorders Research (NCSDR)

  • The commission (created by the U.S. Congress in 1990) conducted a comprehensive study of the social and economic impact of sleep disorders in America and made recommendations based on its findings to the Congress in January 1993

  • Neurology

  • Branch of medicine that referring to the nervous system and its diseases

  • Neurotransmitters

  • Endogenuous chemical components that are released from axon terminals of one neuron and transmit the signal to the next neuron by combining with its receptor molecules. Neurotransmitters important in the control of sleep and wakefulness include: norepinephrine, serotonin, acetylcholine, dopamine, adrenaline and histamine.

  • Night Terrors

  • Also known as sleep terrors, or pavor nocturnus. Night terrors are characterized by an incomplete arousal from slow wave sleep. If, the individual is awakened during a night terror, he/she is usually confused and does not remember details of the event. Night terrors are different from nightmares; if an individual is awakened during a nightmare, he/she functions well and may have some recall of the nightmare.

  • Nightmare

  • Unpleasant and/or frightening dream occurring in REM sleep (different from a night terror)

  • Nocturia

  • Excessive, often frequent, urination during the night

  • Nocturnal

  • Of the night; pertaining to events happening during sleep or the hours of darkness.

  • Nocturnal Confusion

  • Episodes of delirium and/or disorientation near or during nighttime sleep; often seen in victims of Alzheimers Disease and more common in the elderly

  • Nocturnal Enuresis (Bedwetting)

  • Urinating while asleep

  • Nocturnal sleep-related eating disorder (NS-RED)

  • Getting up during the night and eating while sleepwalking. No recall in the morning.

  • Non-Invasive

  • Medical procedure not penetrating the skin or a body cavity.

  • NREM or non-REM sleep

  • Characterized by slower and larger brain waves and little or no dream behavior; quiet sleep, slow-wave sleep; approximately 80% of sleep

  • NREM Sleep Intrusion

  • Brief period of NREM sleep patterns appearing in REM sleep; a portion of NREM sleep not appearing in its usual sleep cycle position

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Sleep Related Terms

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