Restoration theory
- Created by: Sophie Kelly
- Created on: 17-05-13 11:50
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- Restoration theory - growth and repair hypothesis
- Sleep is to restore bodily energy reserves, repair muscle and neurotransmitter conditions and replenish/aid psychological recovery
- Oswald (1980)
- NREM stages 1-4 are all needed for repair/restoration of the body
- REM is essential for repair/restoration of the brain
- NREM stages 1-4 are all needed for repair/restoration of the body
- Horne (1988)
- 'Core sleep' = stage 4 and REM essential for repair/restoration of brain
- 'Optional sleep' = stages 1,2,3 not needed at all for repair/restoration
- Restoration of body happens when we are awake and relaxed
- 'Optional sleep' = stages 1,2,3 not needed at all for repair/restoration
- 'Core sleep' = stage 4 and REM essential for repair/restoration of brain
- Oswald (1980)
- Functioning will be impaired when we are sleep deprived
- Randy Gardner stayed awake for 264 hours, suffered hallucinations, lapses of concentration, disorganised speech, blurred vision and paranoia
- Suggests a restoration function of sleep
- Randy: poorly recorded case study
- Low controlled and don't know what his life was like prior to exp
- Randy: poorly recorded case study
- Suggests a restoration function of sleep
- Coren
- Found older dogs died after 13 days of sleep deprivation compared to puppies after 6 days
- Rechtshaffen
- Found rats die after 12-21 days
- Randy Gardner stayed awake for 264 hours, suffered hallucinations, lapses of concentration, disorganised speech, blurred vision and paranoia
- There will be a rebound effect following sleep deprivation
- Dement (1960)
- Pp's deprived of REM sleep seemed to have a need to catch up
- Attempts to enter REM sleep doubled from an average of 12-26 times by the 7th night
- When allowed to sleep normally, the pps spent much longer than normal in REM, suggesting restorative function of sleep
- Attempts to enter REM sleep doubled from an average of 12-26 times by the 7th night
- Pp's deprived of REM sleep seemed to have a need to catch up
- Dement (1960)
- There will be increase in REM during brain growth, reorganisation and repair
- Research into life span changes in sleep suggests that REM activity reduces as we get older
- In newborns, there is up to 50% REM during one day's sleep in contrast to elderly people who may only have 10-20%
- Arguably because brain growth is essential tin early years where as in later life there is less need to develop brain
- Further supported by premature babies engaging in as much as 90% REM, again suggesting restorative function of sleep
- Arguably because brain growth is essential tin early years where as in later life there is less need to develop brain
- In newborns, there is up to 50% REM during one day's sleep in contrast to elderly people who may only have 10-20%
- Research into life span changes in sleep suggests that REM activity reduces as we get older
- Increase in NREM during times of illness or injury or increased exercise
- Shapiro et al (1981)
- 56 mile marathon runners slept considerably longer for 2 days following the race, with much more NREM and less REM
- Home and Horley
- Untitled
- Adey
- Found paralyzed people only had small reduction in NREM compared to non-paralyzed
- However, restoration theory would suggest they need lot less
- May be because they have nothing else to do but sleep?
- However, restoration theory would suggest they need lot less
- Found paralyzed people only had small reduction in NREM compared to non-paralyzed
- Shapiro et al (1981)
- Sleep is to restore bodily energy reserves, repair muscle and neurotransmitter conditions and replenish/aid psychological recovery
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