1 sheep…2 sheep - about sleepSubmitted by: Alan Kojima-DePauw University
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 melatoninyou wake up.
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
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 • 5th day hallucinations • Slept for 15 hours
You think you have a disorder don’t 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)
~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.