Discuss evolutionary explanations of sleeo

Horne proposed that the restorative approach can explain why we need core sleep, whilst the optional sleep can explain why we might sleep to waste time and conserve energy.

6) Functions of Sleep – Evolutionary Explanations

This therefore undermines the Evolutionary Theory as an explanation of sleep. The body cools, making the eyelids drop and sending you to sleep. The observed effects on memory retention the next day were similar to those obtained from individuals who had received no sleep.

However, both theories have gaps.

Why Do We Sleep? Modern Theories of Sleep

Anterior cingulate cortex Executive functioning is "the ability to plan and coordinate a willful action in the face of alternatives, to monitor and update action as necessary and suppress distracting material by focusing attention on the task at hand".

The theory is only relevant in our evolutionary past, and is not true of human sleep today. Dreams are an expression of our unconscious thoughts and conscious experiences. For a deeper understanding of the reasons why we sleep, watch this TED lecture by neuroscientist, Russell Foster.

Half of its brain deals with breathing whilst the other half is at rest. We feel more alert, more energetic, happier, and better able to function following a good night of sleep.

One early study into neurochemical influences on sleep and memory was conducted with cats and demonstrated that sleep deprivation increased brain protein synthesis.

To learn more about them, be sure to check out the "Bookshelf" feature at the end of this essay. A common test used to assess error correction and trouble shooting with regards to the frontal lobe is the Wisconsin Card Sorting Test.

Dolphins surface the water in order to breathe and therefore if their whole brain fell into SWS, they would drown. 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 theory and the role of sleep in learning are covered in greater detail in Sleep, Learning, and Memory. Muscarinic antagonists, or chemicals that block ACh, impair spatial learning when administered prior to a training task among rats. There is evidence that these altered levels of proteins could increase the excitability of the central nervous system, thus increasing the susceptibility of the brain to other neurochemical agents that can cause amnesia.

This suggests they had not retrieved all of the memory related to the unpleasant experience. Incidentally, this feeling is counteracted by the use of caffeinewhich blocks the actions of adenosine in the brain and keeps us alert.

This theory suggests that blood slowly drains out of our brain during the day through the force of gravity. Because of this correlational nature it does not directly prove a cause and effect relationship between predation risk and hours of sleep.

Effects of sleep deprivation on cognitive performance

This system is believed to come into play when intervention of habitual response is necessary. We will write a custom essay sample on Discuss evolutionary explanations of sleeo or any similar topic specifically for you Do Not Waste. Mammals expend a large amount of energy to maintain a constant body temperature, and it is suggested that sleep is a time of enforced inactivity which conserves energy.Evolutionary Theory of Sleep.

Evolutionary theory, also known as the adaptive theory of sleep, suggests that periods of activity and inactivity evolved as a means of conserving energy. While there are research and evidence to support each of these theories of sleep, there is still no clear-cut support for any one theory.

It is also. Discuss evolutionary explanations of the functions of sleep - Discuss evolutionary explanations of sleeo introduction. Evolutionary explanation of sleep suggests there four mains reasons for it, energy conservation, foraging requirements, predator avoidance and.

Discuss evolutionary explanations of the functions of sleep. Evolutionary explanation of sleep suggests there four mains reasons for it, energy conservation, foraging requirements, predator avoidance and to waste time. The evolutionary approach has also been called the ecological approach.

Discuss evolutionary explanations of human aggression One evolutionary explanation of human aggression is sexual jealousy. Infidelity triggers sexual jealousy which is an evolved adaptive response to infidelity.

Men have developed many strategies from vigilance. May 27,  · Evolutionary explanations of sleep have an adaptive purpose to maximise the chances of survival and pass on the genes to offspring.

One of the main features of the evolutionary explanation is sleep conservation, as proposed by Webb (). Why do we sleep? We spend a third of our lives asleep, so surely sleep has a meaningful purpose.

Here are 5 theories to explain why we sleep. Why do we sleep? We spend a third of our lives asleep, so surely sleep has a meaningful purpose. Here are 5 theories, from the earliest recorded explanations to the present day.

Theory #1 – To.

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Discuss evolutionary explanations of sleeo
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