connotes a condition in which the body is in a decreased state of activity, with the consequent feeling of being refreshed.
is a state of rest accompanied by altered conscious- ness and relative inactivity.
complete a full cycle every 24 hours. “Circa” in Latin means “approximately” and “diem” is the Latin word for “day”; circadian represents approximately 1 day
Stages III and IV, each representing about 10% of total sleep time, are deep-sleep states, termed ______ or slow-wave sleep.
a person passes consecutively through the four stages of NREM sleep.
a natural chemical produced at night that decreases wakefulness and promotes sleep
are sleep disorders characterized by insomnia or excessive sleepiness.
are patterns of waking behavior that appear during sleep.
is characterized by difficulty falling asleep, intermittent sleep, or early awakening from sleep.
is a condition characterized by excessive sleep, particularly during the day.
is a condition characterized by an uncontrol- lable desire to sleep.
generally referred to as sleep-disordered breathing (SDB), is a condition in which a person expe- riences the absence of breathing (apnea) or diminished breathing efforts (hypopnea) during sleep between snoring intervals.
restless leg syndrome (RLS)
cannot lie still and report unpleasant creeping, crawling, or tingling sensations in the legs.
refers to a decrease in the amount, consis- tency, or quality of sleep.
or sleepwalking may range from sitting up in bed to walking around the room or the house to walking outside the house.
is urinating during sleep or bedwetting. It occurs most commonly in males who are over three years of age.
refers to nonpharmacologic recommendations that help a per- son get a better night’s sleep.