| A | B |
|---|
| apnea | absence of breathing |
| bruxism | grinding of the teeth |
| cataplexy | sudden loss of muscle tone, triggered by an emotional change such as laughing or anger |
| circadian rhythm | phenomena that cycle on a 24-hr basis |
| climate control | mechanisms for maintaining temperature, humidity, and ventilation |
| comfort | state in which a person is relieved of distress |
| drug tolerance | diminished effect of a drug at its usual dosage range |
| environmental psychologist | specialist who studies how the environment affects behavior |
| humidity | amount of moisture in the air |
| hypersomnia | sleep disorder characterized by feeling sleepy despite getting a normal amount of sleep |
| hypersomnolence | excessive sleeping |
| hypnogogic hallucinations | dream-like auditory or visual experiences while dozing or falling asleep |
| hypnotic | agent that produces sleep |
| hypopnea | hypoventilation |
| hypoxia | inadequate O2 at the cellular level |
| insomnia | sleep disorder involving early awakening or difficulty falling asleep or staying asleep |
| jet lag | emotional & physical changes experience when arriving in a different time zone |
| massage | stroking the skin |
| mattress overlay | layer of foam or other devices placed on top of the mattress |
| melatonin | hormone that induces drowsiness and sleep |
| microsleep | unintentional sleep lasting 20 to 30 seconds |
| multiple sleep latency test | assessment of daytime sleepiness |
| narcolepsy | sleep disorder characterized by the sudden onset of daytime sleep, a short NREM period before the first REM phase, and pathologic manifestations of REM sleep |
| nocturnal enuresis | bedwetting |
| nocturnal polysomnography | technique used to obtain physiologic data during nighttime sleep |
| occupied bed | changing linen while the client remains in bed |
| parasomnia | condition associated with activities that cause arousal or partial arousal, usually during transitions in NREM periods of sleep |
| photoperiod | number of daylight hours |
| phototherapy | technique for suppressing melatonin by stimulating light receptors in the eye |
| progressive relaxation | therapeutic exercise whereby a person actively contracts and then relaxes muscle groups |
| relative humidity | ratio between the amount of moisture in the air and the greatest amount of water vapor the air can hold at a given temperature |
| rest | waking state characterized by reduced activity and reduced mental stimulation |
| restless legs syndrome | movement, typically in the legs, but occasionally in the arms or other body parts, to relieve disturbing skin sensations |
| sedative | drug that produces a relaxing and calming effect |
| sleep | state of arousable unconsciousness |
| sleep apnea/hypopnea syndrome | sleep disorder in which the sleeper stops breathing or the breathing slows for 10 seconds or longer, five or more times per hour |
| sleep diary | daily account of sleeping and waking activities |
| sleep paralysis | inability to move for a few minutes just before falling asleep or awakening |
| sleep rituals | habitual activities performed before retiring |
| sleep-wake cycle disturbance | condition that results from a sleep schedule that involves daytime sleeping |
| somnambulism | sleepwalking |
| stimulants | drugs that excite structures in the brain |
| sundown syndrome | onset of disorientation as the sun sets |
| sunrise syndrome | early morning confusion |
| thermoregulation | ability to maintain stable body temperature |
| tranquilizer | drug that produce a relaxing and calming effect |
| unoccupied bed | changing the linen when the bed is empty |
| ventilation | movement of air in and out of the lungs; movement of air in the environment |
