The lefties
Why comment on the lefties and not on the righties ?. Left-handers are minorities, more or less between 10 to 13% of the world population and they are true as when you see unusual situations, see a left-handed, always arouses some curiosity, and this is because they have to deal with a world made for right-handers (tools and several made to handle with the right hand).
Studies on the characteristics of left-handers, mainly of a statistical nature, are made by right-handers who study them from the outside and not from within to understand them; so that various of the particularities that typify them must be taken with clamp and rather stay with the concept of the left that is not more than a form of brain functioning in this case of the right hemisphere that is the dominant of nature (mostly accepted ) inherited or that occurred genetically during embryonic development.
Fifty years ago, there was a prejudiced erroneous concept of a lefty, attributed mainly to the Jewish legacy: for them the right represented good and the active principle superior and the left evil, the inferior passive principle. Fortunately in our time this conception has no place and a left-handed person no longer arouses the curiosity of yesteryear, now it is like seeing the hair of an unusual color of a person ..
A left foot is usually detected after 3 years of age when observing a child using a hand, in this case on the left, for activities that require strength. The majority of lefties are for the hand, leg eye and left ear.
Today left-handed children do not have to be forced to reeducate to use their right hand, if they did, the functions of their cerebral hemispheres are reversed and delays may occur in the cognitive processes of the brain as lack of concentration. Left-handed children in both homes and schools need tolerance and patience on the part of parents and teachers because they have to adapt with their left side to face the difficulties of things done for the right-handed
Recently scientists from the University of Oxfod have discovered a gene that increases the probabilities of being left-handed, in individuals who possess it causes an inversion of physical dominance, however there are many other factors in left-handed people who do not have this gene, what they want say that they are not conclusive causes.In addition, this gene is related to the presentation of schizophrenia, but again in the presentation of this disease there are many other factors in there that say that left-handers with this gene are prone to schizophrenia is a tremendous senselessness.
The cerebral functioning is complex, the right-handed have the dominant left brain hemisphere that directs the movements of the right side of the body, in this hemisphere there are the locations of language, writing, logical sciences and vision of things by parts, while in the Right cerebral hemisphere that directs the movements of the left side of the body are more specialized areas for music, art, emotions, perception and holistic thinking (vision) of things - overall or integral vision.
The functions of these hemispheres occur in the subject and some will be stronger according to hemispheric dominance, hence it is said that left-handers are more prone to musical and artistic (creative) sensibility.
Right or left handed are not 100% yes, always in both there is a degree of cross lateralization.
Some exercises for right-handers will confirm that they are more left-handed than they think:
-If he kicks better with his left leg, he will be a left-handed player.
-If you point out with a finger and with your eyes open a distant and small point, if you close your right eye and your finger moves out of the point, then you will be left-handed.