Sleep needs and Sleep deprivation

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Author:
gracebee101
ID:
233499
Filename:
Sleep needs and Sleep deprivation
Updated:
2013-09-23 19:46:51
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Psychology
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sleep notes for psych
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  1. Restorative theories (4)
    • propose that sleep provides 'time out' to help recovery from depleating activities
    • repairing damaged cells
    • physiological rest
    • prolonged sleep deprivation of rats resulted in breakdown of various bodily tissues and death in 3 weeks
  2. REM sleep (4)
    • plays important role in brain development
    • provides 'exercise' for neurons that form circuits
    • proposed that REM sleep assists in consolidation of new info (just motor tasks)
    • REM rebound = catching up on lost REM sleep by spending more time in REM sleep next time asleep
  3. Survival theory (3)
    • proposes that sleep evolved to enhance survival of organism by making it inactive when risky to move about
    • protects sleeper from harm or death
    • discovered from strong animals who sleep alot, hunted animals don't.
  4. Types of sleep deprivation (2)
    • partial sleep deprivation
    • total sleep deprivation
  5. Partial sleep deprivation effects (8)
    • tiredness
    • lack of energy
    • lapse in attention
    • difficulty concentrating
    • low motivation
    • impaired motor skills
    • irritability 
    • occasional headaches
  6. Partial sleep deprivation facts (6)
    • severity and extent of side effects depends on:
    • individual,
    • amount of sleep lost,
    • period of time that sleep deprivation occurs
    • derment believes many students are dangerously sleep deprived
    • dangerous for driving
    • 4 hours of sleep deprivation = 45% worse on perceptual motor tasks like driving
  7. Total sleep deprivation (3)
    • rats dies after 2-3 weeks of no sleep
    • immune system stoped
    • no long lasting effects
  8. Total sleep deprivation causes (11)
    • depression
    • hallucinations
    • delusions
    • paranoia
    • hand tremors
    • drooping eyelids
    • difficulty focusing eyes
    • lack of energy and strength
    • slurred speech
    • low pain threshold 

    sleep deprivation supresses immune cells
  9. Prolonged partial sleep deprivation causes (4)
    • bad at cognitive tasks   
    • bad at solving problems that need creative thinking   
    • bad for transport drivers and doctors   
    • memory processes impaired
  10. Methods of investigation - sleep (9)
    • activity monitors
    • stanford sleepiness scale
    • time-free studies
    • forced de-synchrony studies
    • EEG
    • EMG
    • EOG
    • sleep diary
    • polysomnography
  11. activity monitors (3)
    • measures movement
    • size of wristwatch
    • when not moving are asleep
  12. Standford sleepiness scale
    stages 1>8 levels of sleepiness
  13. Time-free studies (5)
    • studying individuals in time-free zones
    • no cues to give clue about time
    • usually sunlight is blocked - participants dont know time
    • still show circadian rhythms
    • length of 'day' differs
  14. Forced de-synchrony studies (4)
    • participants forced into longer or shorter days
    • used to examine effects on circadian rhythms 
    • sleep-wake
    • temperature
  15. Measure of investigation - stress (3)
    • questionnaires
    • reference groups
    • focus group
  16. questionnaires(3)
    • provides normative data
    • normal range of values
    • can see outliers
  17. reference groups
    members from organisation and researchers gain expert opinions from people about methods, design and meaning
  18. focus groups
    representative group from the organisation who interpret the findings > focus on strategies for change
  19. Ethics (2)
    • fatigue management
    • the occupational health safety and welfare act of 1986
  20. fatigue management
    • workplace responsible to enforce fatigue management 
    • education and training for employees to understand risks
  21. The occupational, health, safety and welfare act of 1986 (2)
    • concerned with managing workplace stress
    • bullying one of the main causes of claims

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