restoration theory of sleep

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  • Restoration Theory
    • REM sleep for brain restoration and SWS for bodily repair
    • Growth hormone (GH) secreted during  SWS; decline of GH in older age because of reduced SWS; lack of SWS = poor immune functioning
    • REM important for brain growth and restoration of the body. Moderate sleep deprivation is said to have little effects on the body
    • Link between REM and memory; if sleep deprivation persists it can cause memory and attention deficits
    • Total sleep deprivation studies suggest no long-term damage. But studies are often case studies, subject to individual differences
      • Peter Tripp:  didn't sleep for about 9 days reported hallucination
      • Randy Gardner: went without sleep for 11 nights. Reported blurred vision, slurred speech and mild paranoia
    • Some animals have no REM sleep so cannot be vital for restoration
    • Horne reviewed 50 studies in which humans had been deprived of sleep, he found few of them had problems with the ability to perform physical exercise. Suggesting sleep isn't useful for physiological restoration
    • People with fatal familial insomnia completly stop sleeping in their middle age, and die within two years. Autopsy reveals a degeneration of the thalamus, which may be responsible for the onset of insomnia
  • Oswald
  • Horne


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