The first element of the evolutionary explanation is that it is necessary for energy conservation. This supports the view that energy conservation might be the main reason for sleep.
Discuss evolutionary explanations of sleeo - Paper Example Discuss evolutionary explanations of sleeo Discuss evolutionary explanations of the functions of sleep - Discuss evolutionary explanations of sleeo introduction.
If sleep is a vital function then they are best to sleep when east vulnerable. Horne proposed a theory which combined both the restorative and evolutionary theories to explain the functions of sleep. For example, why do we have a stronger drive for sleep when we are deprived of it?
This is supported as well in humans because of the greater need for REM sleep in infants whose brains are developing, therefore making this function of sleep universal and generalizable to all animals. Furthermore, Zepelin and Rechstschaffen found that smaller animals, with higher metabolic rates, slept more than larger animals.
A2 level EvolutionaryFunction of SleepSleep AO1 — According to the Evolutionary Approach, the function of sleep serves an adaptive purpose and sleeping patterns have evolved naturally in order to promote survival.
On the other hand, examples in the real life world do support the idea that sleep patterns may have evolved in response to certain environmental pressures. The time spent sleeping may be constrained by food requirements, herbivores have constrained sleep as they have to eat grass constantly due to lack of nutrients such as cows, whereas carnivores however can afford to rest much of the time as they eat a variety of meats giving them these important nutrients.
Dolphins surface the water in order to breathe and therefore if their whole brain fell into SWS, they would drown.
For example, smaller mammals sleep longer Zepelin and Rechtschaffenwhich fits with the energy conservation theory.
Outline and evaluate one or more evolutionary explanations for the functions of sleep. This highlights how the Evolutionary Theory of sleep cannot be applied universally to all species, and that the threat of predation may not be the main function of sleep.
They actually found a negative correlation between metabolic rate and sleep, refuting the conservation hypothesis. Seigel agrees with this view, saying that actually being awake and moving is more dangerous for prey as the animal is more likely to get injured.
This shows that NREM sleep is more important for energy conservation; thus supporting evolutionary explanations.
However, this theory has been criticised are there are exceptions to this, as sloths which are very large creatures sleep for 20 hours a day.
This could explain why some animals sleep much longer than others. Instead, Horne proposed a theory to encompass both the restorative and evolutionary explanations of sleep by suggesting a distinction between core and optional sleep.
The evolutionary approach has also been called the ecological approach. Also, this can explain why some animals sleep more than others; smaller animals have a greater need for saving energy as their metabolism is higher, hence why they sleep more.
This is an evolutionary explanation of sleep because it helps a marine mammal and migrating birds to cope with particular pressures to survive.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.
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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 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 first element of the evolutionary explanation is that it is necessary for energy conservation. 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.
May 15, · The evolutionary explanation of sleep tries to explain why we sleep through the benefits it would bring in terms of survival. Energy conservation Mammals expend a lot of energy just staying awake at a certain body temperature. We have a limited supply of energy so sleep acts as a way of reducing the amount of.Download