Discuss the restoration theory of sleep

More about sleep.

Sleep as a restorative process and a theory to explain why

Recent reports in the proposed neural mechanisms of sleep appear to speculate more on the possible roles of the PGO waves in REM sleep. Another group of workers hypothesized that slow wave sleep also has some restorative effect, since it appears to be a period of rest for the brain. On the other hand, animals that have many natural predators have only short periods of sleep, usually getting no more than 4 or 5 hours of sleep each day. Currently very little is known about why we sleep, which is interesting because there has been lot of research. In the Preservation Theory it was stated that sleep and the desire to sleep at night or under conditions resembling night are the result of the evolutionary process to keep us away from trouble. Theories of why we sleep can be separated into two explanations Restorative theories, and Ecological theories. These workers called this region in the pons the peribrachial area, and argued that acetylcholine cells in the peribrachial area are quite active during REM sleep. Rebecca Turner. According to one of the study's authors, Dr. On the other hand, it has been noted that the quality of sleep is as important as its duration. This theory is coupled with the observation that subjects slept longer for the two nights following strenuous exercise.

The workers noted that this probably explains why we feel mentally sharper after a good night's sleep, as compared to how we feel after staying awake all night long.

Clues to the functions of mammalian sleep. Slow-wave sleep: a recovery period after exercise The sleep-dependent increase in glymphatic system function is one piece of evidence supporting the restorative function of sleep theory.

Sleep theories ap psychology

Special Report. Presently, withdrawal of sensory awareness is similarly believed to be a factor in sleep, but an active initiation mechanism that facilitates brain withdrawal has also been recognized. This supports the view that sleep helps restore the body physically because the immune system consists of protein molecules which as regenerated during cell growth in SWS. This acts as something of a waste disposal system, cleansing out the brain of these waste products. Everson rats 1. Growth Hormone is secreted during SWS Hartmann said that REM sleep is a time for making neurotransmitters to compensate for the amount used during the day. Another group of workers hypothesized that slow wave sleep also has some restorative effect, since it appears to be a period of rest for the brain. Support for this theory is provided by research that shows periods of REM sleep increase following periods of sleep deprivation and strenuous physical activity.

Only three of these theories are here mentioned in this review: Restorative Theory The Restorative Theory was put forward induring which a group of workers argued that sleep served as a behavioral state of the body to save energy by lowering our body metabolism.

Brain activity is visibly altered following sleep deprivation.

cognitive theory of sleep

What are your concerns? Another group of workers hypothesized that slow wave sleep also has some restorative effect, since it appears to be a period of rest for the brain.

Stages of sleep

However, it is thought that the locus coeruleus and the norepinephrine-secreting neurons emanating from it play important role in the phenomenon of REM sleep. Animals that have few natural predators, such as bears and lions, often sleep between 12 to 15 hours each day. The different patterns of sleep in other species do seem to be related more to their differing lifestyle needs rather than a more endogenous purpose. Further, there is experimental evidence which show that cells from the reticular formation project to the cortex, but indirectly. This theory suggests that NREM sleep is important for restoring physiological functions, while REM sleep is essential in restoring mental functions. While we can now investigate sleep and related phenomena, not all researchers agree on exactly why we sleep. Sleep deprivation in adolescents can be examined with the use of previous research and theories of sleep The activity of the glymphatic system is known to clear away beta-amyloid plaques from the interstitial space, a protein that is associated with Alzheimer's disease. For example, growth hormone production is enhanced during phases of deep sleep. Thus, both homeostatic factors factor S and circadian factors factor C are now believed to interact to determine the timing and quality of sleep. Wikipedia Free encyclopaedia.

When allowed to sleep normally the participants spent much longer than normal in REM sleep, as did Randy Gardner.

Rated 6/10 based on 82 review
The Restoration Theory Of Sleep