It would seem logical to most of us that sleep would play a role in rest and restoration of our body however, the evidence from sleep deprivation studies with humans doesn't. One of the earliest theories of sleep, sometimes called the adaptive or evolutionary theory, suggests that inactivity at night is an adaptation that served a survival function by keeping organisms out of harm's way at times when they would be particularly vulnerable. Another weaknesses of restorative explanations of the function of sleep is through the support alternative theories have gained, which serves to challenge the restoration theory for example, according to the brain plasticity theorists, sleep aids processes such as memory consolidation and learning.
Detailed description of how the theory explains the functions of sleep 3-4 marks description of theory lacks detail and/or some aspects of theory are omitted. Examples of restoration theories: oswald's 1980 growth and repair hypothesis, horne's 1988 restoration theory, the cell-repair hypothesis oswald's 1980 growth and repair hypothesis rem sleep is for the restoration of the brain. It looks like you've lost connection to our server please check your internet connection or reload this page.
Repair and restoration theory according to this theory, the function of the sleep is so significant that it allows the body time to aid the body to recover from the exertions of the days exertions of the day include mental or physical activities that an individual has carried out throughout the day. What is sleep for one of the best known ideas is that it exists for the body to recover and repair itself in some way this view was systematically investigated and developed by researcher ian oswald and colleagues, in what became known as the restoration theory of sleep. The theory of the function of sleep one theory of sleep is the restoration theory proposed by oswald et al in 1966, which suggests that the function of sleep, especially rem sleep is to restore the energy levels and to repair the brain and body. Outline and evaluate restoration explanations of the functions of sleep (4 marks + 16 marks) the restoration explanation to explain sleep proposed by oswald (1980) suggests there are 2 functions sws to enable body repair, and rem to enable brain recovery.
A lot of the early theories focused on the effects of sleep on brain function because sleep is generated in the brain the common thinking was, 'well sleep is generated in the brain, so it must. Ian oswald (4 august 1929 - 25 april 2012) was a sleep researcher and psychiatrist academic career he was educated first in london and later in belper, derbyshirein 1947, he became a medical student at caius college, cambridge, gaining a first class honours degree in the part 2 tripos in psychology. Ao1 according to the restoration theory, the function of sleep is to restore the brain and body by replenishing the levels of neurochemicals and restoring energy. The amount of rem sleep is proportional to the immaturity of the offspring at birth, which is why humans needs so much for example, dolphins can swim from birth and need little rem sleep whereas the platypus is more immature and needs lots of rem sleep. Restoration theories suggest that the function of sleep is to repair and restore the brain and body if this did not happen, then the functioning of the brain and body would gradually break down.
Our theory is consistent with sleep state organization, the main elements of which are that (1) the percentage of rem sleep is very high in early infancy (about 50% of total sleep time) and declines sharply at 2-3 months of age (2) sleep continuously cycles from light to deep sleep and back to lighter stages of sleep as the cycle repeats. Horne (1988) proposed a theory which combined both the restorative and evolutionary theories to explain the functions of sleep he said there are two types of sleep, core (which is needed) and optional sleep. The restoration theory also places too much emphasis on the biological approach which views the function of sleep as something that is determined however, if we view things from a behavioural perspective, it is likely to see sleep as a product of social norms. Young suggests that the more we know about sleep patterns of other species, the more it becomes apparent that environmental pressures rather than restoration provide the key to understanding sleep explain the issues involved with using case studies and non-human animal studies in sleep deprivation research. 156 aims neuroscience volume 2, issue 3, 155-171 argued that comparison of sleep to a deathlike state, ie an absence of function, may have contributed to the delay in the modern scientific study of and understanding of sleep.
This theory suggests that restoration to the body, from damage caused during the day, occurs during sleep oswald (1963) they suggested new tissue growth occurs during sleep. Oswald (1977, 1983) suggested that tissue restoration, such as cell repair, happen during sleep according to oswald (1980), repair and restoration of the brain happens during rem sleep, while hormonal processes restore the rest of the body during the other stages. Sleep, especially stage 3 slow-wave sleep, has also been associated with increased levels of growth hormone levels in the body (growth hormone is an important factor in tissue regeneration and repair), although it is not necessarily the case that increased sleep directly leads to increased growth, or vice versa.
Sleep function: the null hypothesis so far the null hypothesis has survived better than alternatives positing some core function for sleep in what follows we shall test the null hypothesis by considering three of its key corollaries. Taken together, whereas classical consolidation theory suggests that declarative information is stored in the hippocampus for a certain period and that information transfer to the neocortex occurs mainly during sleep, in particular during non-rapid eye movement (rem) sleep, novel data suggest a similar degree of consolidation during waking state. Our finding bears on one of the perennial conundrums in biology: the function of sleep, basheer said somewhat surprisingly, there have been no modern-era studies of brain energy using. During sleep, most of the body's systems are in an anabolic state, helping to restore the immune, nervous, skeletal, and muscular systems these are vital processes that maintain mood, memory, and cognitive function, and play a large role in the function of the endocrine and immune systems.