Sleep

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Sleep

• What is Sleep?

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What is Sleep?

• What happens to us while we sleep?
• Why do we sleep?
• What are the mechanisms of sleep?

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What happens to us while we sleep?

• Little Movement
• Stereotypic posture
• Reduced response to stimulation
• Reversibility

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How do Scientist Study Sleep?

• Electroencephalogram 1929 Hans Berger
• Electrooculogram CPS (Frequency)
• Electromyogram Amplitude (Height)

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Functions of Sleep

• Restoration and Recovery Theory
• Energy and Conservation Theory
• Ecological / Predator Avoidance Theory

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Functions of REM sleep

• Stimulation of Brain Growth
• Replenishes neurotransmitters
• Fine tuning of binocular system
• Consolidation of memories (Short-Term to Long
  Term)
• Erasure of inappropriate memories
• Prevent one from waking up

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3 Popular Theories on Dreaming

• Wish Fulfillment (Freud)
• Problem Solving (Rosalind Cartwight,1977)
• Activation- Synthesis Model (Hobson McCarley)