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Describe and evaluate the recovery/restoration theory of the function of sleep.
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- Words:
- 673
- Submitted:
- Fri Feb 20 2004
... Psychology Essay Describe and evaluate one theory of the function of sleep (24 marks) Recovery/ Restoration is one theory on the functions of sleep. This theory is based on the concept that sleep is needed to save energy and to allow restoration of tissue. Research evidence that supports this theory focuses mostly around physiological benefits of sleep. Alison and Cicchetti (1976) surveyed 39 mammalian species to work out the amount of time spent in slow wave sleep (SWS) and in REM sleep. It was found that body weight (which correlates with metabolic rate) was the best indicator of the amount of SWS needed. Oswald's (1980) findings can relate to this; he found that during SWS growth hormones are released from the pituitary gland, stimulating protein synthesis; which is essential for tissue repair. This can explain why new-borns spend a great deal of time sleeping, due to the fact that REM sleep reflects
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