CONCEPTS ABOUT SLEEP
is a period of rest. It is a form of relative physical inactivity and inattentiveness to the environment (temporary suspension
of full sensory perception and interaction). It is a recurrent reversible phenomenon.
and wakefulness are a balance between the activation of the sleep system and the wake system. A sleeping person is not legally
accountable for actions during the period of sleep.
PURPOSES and PHYSIOLOGY OF SLEEP
day is light is for humans to seek sustenance. The night is rest and sleeping. The change or alternation of day and night
is among the miracles of creation with profound biological implications. The following biological phenomena are affected by
this diurnal variation or biorhythms: sleep, cortisol excretion, and melatonin excretion.
is a biological imperative. An adult needs 8-9 hours of sleep in a 24-hour cycle. The period of sleep is psychological rest
(decreased anxiety and sensory stimulation) and biological rest (lower respiration and circulation).
know from studies of physiology that sleep is not a passive activity. Some bodily functions are diminished during sleep (muscle
inertia, basal metabolic rate, and sensory reactivity to the environment) whereas others are increased (hand mitosis and electrical
activity in the brain). No functions ever stop completely. Thinking and memory take place during sleep. Mitotic activity is
highest during sleep. Metabolism continues during sleep but at a lower rate. Reorganization
of brain architecture occurs during sleep. Homeostatic adjustments are easier to carry out during sleep because there are
no concurrent new changes.
ETIQUETTE OF SLEEPING
is recommended before sleeping. Sleeping is best on the right side of the body. Sleeping on the face is not recommended. Hands
are washed on waking up. The face is washed to clear away ocular, nasal, and oral secretions. Sleeping naked is not recommended.
human should take an adequate amount of sleep appropriate to age and physiological conditions. More sleep than is required
offensive. Most sleep should be at night. A period of sleep and rest in mid-day is recommended if possible. No work including
study should continue at night if sleep is overwhelming.
people dream in both REM and non-REM sleep but dreams during REM are forgotten. Remembering of dreams is not perfect. Dreams
may be review of actual daytime activities with considerable distortion of the reality.
dreams should be told. It is an offense to lie when reporting a dream. Bad frightening dreams should not be reported.
of dreams is not reliable and should not be attempted. False conclusions from dream interpretation could lead to actions that
adversely affect seeking medical care or complying with medication.
DISORDERS OF SLEEPInsomnia is a symptom for other illnesses. It is due to activation of the reticular system by pain
or emotional factors that causes activation of the limbic system. Somnambulism (sleep-walking) is dangerous because a person
can harm himself and others. Bed-wetting (nocturnal enuresis) is normal in children. It stops with age as neurological and
bladder functions mature. It may have a genetic basis. Narcolepsy is an irresistible urge to sleep. It may be part of certain