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Laterality left, right and crossed
25/04/2019
Laterality left, right and crossed
The point of view: Does a map "upside down" bother us?
Today, there is really very little that is known with certainty, and more compared to other fields of psychological research. It is known for example that the two hemispheres of the brain, replicating one another, are involved in different types of activity. The left hemisphere more active in the right-handers, is specialized mainly in the processes related to induction, deduction and language, while the right hemisphere, provides the faculties of vision and visual memory, spatial sense, appreciation of form and color and creativity.
There are, however, many unexplained areas. The specific anatomical relationships between intellectual functions and groups of brain cells are still to be defined. The processes of short-term memory and long-term memory, the consciousness of one's own "I", "subconscious", "superego", "deep mind", frontal lobe and personality, endorphins and others Neurotransmitters, thinking and conclusion ... for example, they are so complex, that it is possible that their functioning involves the entire brain and not just specific regions of it. [citation needed]
In most adults, the speech centers are located on the left side. However, about 15 percent of left-handed people and 2 percent of those who prefer to use their right hands have speech centers in both parts of the brain. Anyway, some lefties develop speech in the left hemisphere only; less than half have it on the right side. Even when the right side of the brain controls mainly the left side of the body, and the left side of the brain controls, to a large extent, the right side of the body. The fact of being ambidextrous indicates that the two halves of the brain have not become as completely specialized, as perhaps they are in homogenously right-handed individuals (or homogenously left-handed individuals). In young children, each side of the brain potentially has the power of speech and language. An injury to the left side in the first years of life, results in the development of the language faculty on the right side of the brain. The domain of speech and probably also of other faculties is firmly established in one of the hemispheres around ten years of age and can not be transmitted to the other later.
The difference of competences between the two cerebral hemispheres seems to be exclusive of the human being. It is simply that the two halves of the brain are complementary.
The point of view: Does a map "upside down" bother us?
Today, there is really very little that is known with certainty, and more compared to other fields of psychological research. It is known for example that the two hemispheres of the brain, replicating one another, are involved in different types of activity. The left hemisphere more active in the right-handers, is specialized mainly in the processes related to induction, deduction and language, while the right hemisphere, provides the faculties of vision and visual memory, spatial sense, appreciation of form and color and creativity.
There are, however, many unexplained areas. The specific anatomical relationships between intellectual functions and groups of brain cells are still to be defined. The processes of short-term memory and long-term memory, the consciousness of one's own "I", "subconscious", "superego", "deep mind", frontal lobe and personality, endorphins and others Neurotransmitters, thinking and conclusion ... for example, they are so complex, that it is possible that their functioning involves the entire brain and not just specific regions of it. [citation needed]
In most adults, the speech centers are located on the left side. However, about 15 percent of left-handed people and 2 percent of those who prefer to use their right hands have speech centers in both parts of the brain. Anyway, some lefties develop speech in the left hemisphere only; less than half have it on the right side. Even when the right side of the brain controls mainly the left side of the body, and the left side of the brain controls, to a large extent, the right side of the body. The fact of being ambidextrous indicates that the two halves of the brain have not become as completely specialized, as perhaps they are in homogenously right-handed individuals (or homogenously left-handed individuals). In young children, each side of the brain potentially has the power of speech and language. An injury to the left side in the first years of life, results in the development of the language faculty on the right side of the brain. The domain of speech and probably also of other faculties is firmly established in one of the hemispheres around ten years of age and can not be transmitted to the other later.
The difference of competences between the two cerebral hemispheres seems to be exclusive of the human being. It is simply that the two halves of the brain are complementary.
