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.
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Famous quotes containing the words dreams in, dreams and/or animals:
“Several moralists have recommended it as an excellent method of becoming acquainted with our own hearts, and knowing our progress in virtue, to recollect our dreams in a morning, and examine them with the same rigour that we would our most serious and most deliberate actions.”
—David Hume (1711–1776)
“If there were dreams to sell,
Merry and sad to tell,
And the crier rung the bell,
What would you buy?”
—Thomas Lovell Beddoes (1803–1849)
“The animals that depend on instinct have an inherent knowledge of the laws of economics and of how to apply them; Man, with his powers of reason, has reduced economics to the level of a farce which is at once funnier and more tragic than Tobacco Road.”
—James Thurber (1894–1961)