Dreams in Animals
REM sleep and the ability to dream seem to be embedded in the biology of many organisms that live on Earth. All mammals experience REM. The range of REM can be seen across species: dolphins experience minimum REM, while humans remain in the middle and the opossum and the armadillo are among the most prolific dreamers.
Studies have observed dreaming in monkeys, dogs, cats, rats, elephants and shrews. There have also been signs of dreaming in certain birds and reptiles. Sleeping and dreaming are intertwined. Scientific research results regarding the function of dreaming in animals remain disputable; however, the function of sleeping in living organisms is increasingly clear. For example, recent sleep deprivation experiments conducted on rats and other animals have resulted in the deterioration of physiological functioning and actual tissue damage of the animals.
Some scientists argue that humans dream for the same reason other mammals do. From a Darwinian perspective dreams would have to fulfill some kind of biological requirement, provide some benefit for natural selection to take place, or at least of have no negative impact on fitness. Antti Revonsuo, a professor at the University of Turku in Finland, claims that centuries ago dreams would prepare humans for recognizing and avoiding danger by presenting a simulation of threatening events. This threat-simulation theory was presented in 2000.
Read more about this topic: Dreams
Famous quotes containing the words dreams and/or animals:
“We grew up founding our dreams on the infinite promise of American advertising. I still believe that one can learn to play the piano by mail and that mud will give you a perfect complexion.”
—Zelda Fitzgerald (1900–1948)
“Of all the animals with which this globe is peopled, there is none towards whom nature seems, at first sight, to have exercised more cruelty than towards man, in the numberless wants and necessities with which she has loaded him, and in the slender means which she affords to the relieving these necessities.”
—David Hume (1711–1776)