The vast majority of people are right — handed. And this choice we make unconsciously. Which hand is the “main” has more to do with how the way our brain. But what about the animals? Because in fact, if we all belong to the class of mammals and the organs have practically the same, and the device of a brain should be like. And therefore the General principles of its functioning too. And now we have evidence that even among the dolphins is how lefties and righties.
If any of the dolphins left-hander?
You probably have a question: if the person to identify the left-handed fairly easily, then how to do it with a Dolphin? Researchers working with the organization of the Dolphin Communication Project, has spent six years studying the population of bottlenose dolphins (Tursiops truncatus) and some other, feeding from the bottom of the ocean in normal conditions, noting which way they are inclined to turn, and found that animals like to keep the right eye on the food.
Currently, it is believed that the preference of one or another part of the body is common throughout the animal Kingdom. Gorillas and chimpanzees prefer to use their right hands as we are. Giraffes usually pull the left foot in front of the right when they fall to drink, and deer herds tend to move counter-clockwise. This offset makes sense when you consider that the nervous system usually consist of left and right hemispheres. Not only that, each half of the brain has controls the opposite half of the body (left hemisphere — right half, and right — left), and each of them dominates the performance of specific tasks.
For example, the human visual processing space occurs mainly in the right hemisphere, while for 95 percent of the people language processing is primarily a result of the work of the left. It is curious that among left-handers, the figure is close to 70 percent. But back to the dolphins.
According to the editors of Science Alert, scientists were able to identify that the striped dolphins (Stenella coeruleoalba), for example, check out unfamiliar objects with my right eye. Dusky dolphins (Lagenorhynchus obscurus) hold the prey while hunting in the field of vision of the right eye. To find out how dolphins use their brains, the researchers recorded on analyzed movement of individuals 30 living in the Bahamas.
In particular, they noted what direction it was often used to animals while foraging on the bottom. Dolphins do it with the nose down, digging in the ground and using one eye to observe this, actually, by the bottom. After analyzing 709 spins dolphins, the experts came to the conclusion that 705 people were turned to the left to search for food animals used their right eye. This suggests that the left hemisphere of the brain performs most of the processing of sensory information related to food production. The remaining 4 maneuver was made one individual, and she used to search for the left eye.