• Fatigue (associated with traffic accidents, lower grades in school, etc)
-Insomnia: problems getting to sleep due to chronic pain, stress and anxiety or
-Sleep Apnea: interrupted/stopped breathing while asleep.
-Narcolepsy: uncontrollably falling asleep/sleepiness during the daylight hours.
(ex: the Narcoleptic Dog)
*Vicious Cycle: Fatigue/Depression→ Increased Anxiety about Sleep→ Difficulty
Sleeping→ Panic/Negative Thoughts→ Increased Arousal→ Poor Sleep...
Aserinsky & Kleitman (1955), Dement (1995)
-Rapid Eye Movement (REM) occurs while people sleep. REM`s are associated
with specific patterns of brain activity (can be measured with an EEG)
Ultradian Rhythms: cycles every 1.5 hours.
-Consists of: a period of REM sleep (ranges a few minutes-1 hour) alternating with a
period of less eye movements (NREM). NREM sleep lasts the remainder of the cycle.
Stages of NREM Sleep:
1.Light sleep, edge of consciousness, associated with SMALL and IRREGULAR brain
! Theta Waves
2.Deeper sleep, associated with short bursts of ac