Unit 3 Psychology: Sleep - Stages of sleep

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  • Stages of sleep
    • Stage One
      • Light sleep.
      • Easily woken.
      • Alpha waves.
      • Hypnogogic state.
      • 15 minutes.
    • Stage Two
      • Large, slow theta waves.
      • K-complexes.
      • 20 minutes.
    • Stage Three
      • 15 minutes.
      • Long, slow delta waves.
    • Stage Four
      • 30 minutes.
      • Slow wave sleep. (SWS)
      • Deep sleep.
      • Long, slow delta waves.
      • Hard to wake.
      • Parasomniac features.
      • Secretion of growth hormones.
    • Rapid Eye Movement (REM)
      • 10 minutes.
      • Beta waves.
      • Dreams.
      • Paralysis.
      • Active brain.

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