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Sleep
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Sleep

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  • 1. SLEEP Laura Morales Albertos Laude El Altillo School 2º Bachillerato
  • 2. Index Introduction Stages of sleep Sleepwalking Sleep Apnea Somniloquy Summary Questions
  • 3. Introduction What is sleep? Reduced or absent consciousness Sensory activity suspended Inactivity of voluntary muscles
  • 4. Introduction Brain areas involved in the sleep: Front hypothalamus->Sleep Back hypothalamus->Wakefulness
  • 5. Sleep Stages Rapid Eye Movement (REM) Non-Rapid Eye Movement (NREM)
  • 6. Sleep Stages: NREM Stage 1: Duration: 4-5% Transition: wakefulness to sleep Hallucinations Loss muscle tone Loss of consciousness Hypnic Myoclonia -> Abrupt Awakening Eyes movement -> Very Slow
  • 7. Sleep Stages: NREM Stage 2: Duration: 45-55% Any eye activity Muscular activity decreases Consciousness disappears
  • 8. Sleep Stages: NREM Stage 3: Duration: 4-6% Transitional period: light -> deep sleep
  • 9. Sleep Stages: NREM Stage 4: Duration: 12-15% Deep sleep Parasomnias (Sleep disorder): Night terrors Nocturnal enuresis Sleepwalking Somniloquy
  • 10. Sleep Stages: REM Duration: 20-25% Movement of eyes -> Very Fast Memorable dreams Muscles paralysed
  • 11.  
  • 12. Sleepwalking Sleep disorder Develop automatic motor activities Unconsciously No communication Duration undetermined: 30 seconds - 30 minutes Occurs during Phase 3 (NREM)
  • 13. Sleep Apnea Sleep disorder Pauses in breathing (apnea) Duration undetermined: few seconds – minutes There are three forms: -Obstructive -Central -Mixed
  • 14. Sleep Apnea: Obstructive The most common sleep-disordered breathing Muscles are relaxed Obstruct the airway
  • 15. Sleep Apnea: Obstructive The most common sleep-disordered breathing Muscles are relaxed Obstruct the airway
  • 16.  
  • 17. Sleep Apnea: Central Brain’s respiratory control centers imbalanced No effort to breathe No chest movements Compensatory Mechanism: -Blow off waste gases -Absorb Oxygen
  • 18. Sleep Apnea: Mixed Combination of: -Obstructive -Central
  • 19. Somniloquy Parasomnia Talk aloud Can occur many times during sleep Listeners: may or may not understand Occurs usually during NREM Can also occur during REM->Dreaming
  • 20. Summary What is sleep? Brain areas involved in the sleep Sleep stages: NREM and REM Sleepwalking Sleep Apnea: Obstructive, Central and Mixed Somniloquy
  • 21.  
  • 22. Questions <ul><li>Which brain areas are invloved in the sleep? (Choose the Wrong answer). </li></ul><ul><li>a)Back region of the hypothalamus. </li></ul><ul><li>b)Front region of the hypothalamus. </li></ul><ul><li>c)Middle region of the hypothalamus. </li></ul>
  • 23. Questions 2. Which stages are known as Light Sleep Phase? a)Stages 1 and 2. b)Stages 2 and 3. c)Stages 3 and 4.
  • 24. Questions 3. Sleepwalking occurs during... a)Phase 3 (NREM). b)Phase 4 (NREM). c)REM.
  • 25. Questions 4. There are three forms of sleep apnea: (Choose the Wrong answer) a)Obstructive b)External c)Mixed
  • 26. Questions 5. Memorable dreams occurs in... a)Stage 4 (NREM). b)Stage 3 (NREM). c)REM
  • 27. Thank you for your attention

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