1. 1 sheep…2 sheep - about sleep Submitted by: Alan Kojima-DePauw University

2. Biological Clock: Light Trigger Brain and body operates on a 24 hour day-night cycle. Melatonin: hormone that has a relaxing effect on the body. Night triggers the release of melatonin Light stops the release of melatonin you wake up.

3. SAD…I know Seasonal Affective Disorder –Tendency to become depressed during certain seasons of the year. Majority of people are depressed during the fall and winter seasons. –Less sunlight

4. Need 8 hours? Everyone needs 8 hours of sleep a night 70-year-old woman slept an average of an hour for 5 consecutive nights no ill effects Randy Gardner world record –11 days w/out sleep –5 th day hallucinations –Slept for 15 hours

5. You think you have a disorder dont you? Insomnia: (difficulty falling asleep) –Pseudoinsomnia: people say they have insomnia but actually sleep normal. Narcolepsy: (extreme daytime sleepiness) –Sleep attacks occur spontaneously and last from 1 min-1 hour on average. Nightmares vs. Night Terrors –Nightmares are bad dreams (During REM sleep) –Night Terrors are frightening dreams that arouse the sleeper to a near-panic state (Not during REM sleep)

6. ~Dreams~ Dreams occur mostly during REM sleep when the mind/body is in deep sleep. REM dreams are more bizarre than non- REM dreams. Cultural background, current concerns, and recent events influence our dreams Passer, Michael W., and Ronald E. Smith. Psychology: the Science of Mind and Behavior. 3rd ed. New York: McGraw-Hill, 2007. 161-173.