1 sheep 2 sheep about sleep submitted by alan kojima depauw university l.
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1 sheep…2 sheep - about sleep Submitted 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

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biological clock light trigger
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.
sad i know
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
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
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~
  • 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.