As a rule, carrying their children, mothers keep them in your left hand, it is assumed that in this case, the information about them goes faster in the right hemisphere of the brain. For a long time it was believed that this unique human feature, however, a recent study showed that similarly behave even such distant relatives of people like walruses and bats.
A group of scientists under the leadership of Yegor Malashichev from Saint-Petersburg state University watched the Indian flying foxes Pteropus giganteusна Sri Lanka and the walrus Odobenus rosmarus divergens in the Chukchi sea. Representatives of these species with humans are United by the fact that they bring small children for a long time taking care of him, reports naked-science.ru. As it turned out, the cubs do try to stay to the left of their mothers.
According to the study authors, their findings are explained by the fact that when observing someone left eye corresponding information arrives faster in the right hemisphere. This, in turn, suggests that the functional asymmetry of the hemispheres of the brain is a very ancient phenomenon that emerged from the distant common ancestors of humans, walruses and many other animals.
The study was published in the journal Biology Letters.
The differences between the right and left hemispheres of the human brain has long been a subject of active study. For research in this area neuropsychologist Roger Sperry 1981 he was awarded the Nobel prize in physiology or medicine. However, the popular notion that the left hemisphere is responsible for logical thinking while the right side is creative, is nothing more than a myth. About two years ago, said American scientist Jeffrey Anderson of the University of Utah. He suggested that the roots of this misconception goes in a time when people were afraid of lefties. Subsequently, this could degenerate into more “harmless” misconception that left-handed and right-handed people think differently, and then to the idea of “logical” and “creative” hemisphere.
Last year, a group of researchers from Brown University have discovered why man, the first time sleeping in a new place, often sleeps badly, even if the sleeping arrangements were quite comfortable. As it turned out, in unfamiliar surroundings, fully immersed in sleep, only one hemisphere of the brain, the other is in a state more similar to wakefulness.
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