In most people - right-handed people - contrary to popular belief, the left brain is active, which controls the right half of the body. Left-handers, on the contrary, are right-handed.
Left hemisphere
1) logic
2) analysis
3) reasoning
4) aggression
5) the sequence
6) Ability to learn
But functional asymmetry is not exhausted only by differences in the perfection of the muscular functions of the right and left halves of the body. It is reflected in the work of the senses. A person has a dominant eye and ear, even half of the nose or tongue can be differently sensitive. In 62% of people, the leading eye is the right eye, which in case of partial loss of vision does not lose its leading position. Turning off the left hemisphere (information is no longer being processed) leads to depression. Right - to euphoria. That is, the left hemisphere catches negative moments, the right hemisphere - positive. Not only images, but words from the point of view of emotions are perceived in different ways. The right-handers have proved themselves to be more optimistic than the left-handers, but ambidextures (equally well-wielding both hands) show the greatest propensity to pessimism.
It has long been established that the universe is asymmetric. In it everything - from spirals of DNA to galaxies - is twisted in one direction. However, on the assurances of physicists, there is also a "mirror" Universe, which in turn, perhaps, explains the appearance of left-handed people. Most of us consider "leftism" anomalous, although life itself, by definition, morphologically - left. There is a hypothesis that right-handedness is the result of natural selection, because the central nervous system of left-handers is more susceptible to poisons, which is why they perished at a time when humanity was hunting and gathering.
We can say that the brain consists of two identical hemispheres associated with the so-called. "Corpus collosum" - a bridge consisting of several million nerve fibers. In order to work in full force, each hemisphere must be able to analyze the information received, this information is transmitted to the other hemisphere, when most of the received has already been processed. In lefties, the connections between the hemispheres are not as rigid as right-handed ones, so information in the cerebral cortex is processed, much more slowly. Confirmation of the features of the functioning and interaction of the left and right hemispheres of the brain can serve many documentary sources, according to which the left-handed Einstein was considered dull at school. However, in right-handers, this relationship leaves little room for freedom of creativity. Until the 1970s. XX century in our country left-handed ruthlessly retrained, considering them pathology, in connection with which many children lost their outstanding abilities. At the same time, there are studies that prove that a person who has returned to his nature has regained his "divine spark". If you are left-handed - it means that you have much more work in the right hemisphere of the cerebral cortex, and if you are right handed - your thoughts are responsible for the interaction of the left cerebral cortex. We advise you to train at most, you can even engage in a kind of training: solve puzzles, puzzles, puzzles and other crosswords that help to think.