4. The cyclic nature of sleep is thought to be
controlled by centers located in the lower part
of the brain.
5. Circadian- Latin word- Circa dies- about a
day
When a person’s biologic clock coincides with
sleepwake pattern, the person is said to be in
circadian synchronization.
6. NON RAPID EYE MOVEMENT (NREM)
RAPID EYE MOVEMENT (REM)
EEG provides a good picture of what occurs
during sleep.
7. Also referred as slow wave sleep.
Brain waves of a sleeper are slower than the
Alpha & Beta waves compare to awake
person.
Most of night sleep is NREM sleep.
10. Occurs every 90 minutes & lasts 5 to 30
minutes.
Dreams takes place.
Brain is highly active.
Brain metabolism increases.
11. Sleeper may be difficult to arouse or may
awake spontaneously.
Muscle tone is decreased.
Gastric secretions increase.
Heart & respiratory rate are irregular.
13. Sleep exerts physiologic effects on both the
nervous system & other body structures.
Sleep in some way restores normal levels of
activity & normal balance among parts of the
nervous system.
Sleep is also necessary for protein synthesis
which allows repair process to occur.
The role of sleep in deterioration in mental
functioning related to sleep loss.
Persons with inadequate amounts of sleep tend
to become emotionally irritable, have poor
concentration & experience difficulty making
decisions.
15. Parasomnias – behavior that may interfere
with sleep or that occurs during sleep.
Types
Arousal disorders
Sleepwake transition disorder
Parasomnias associated with REM sleep
Others
16. Primary sleep disorders – are those in which
the person’s sleep problem is the main
disorder.
Types
Insomnia
Hypersomnia
Norcolepsy
Sleep apnea
Sleep deprivation
