From Latin cerebrum, he brain It is one of the nerve centers that constitute the brain . It is located in the upper and anterior part of the cranial cavity and appears in all beings vertebrates.
In humans, the brain weighs between 1.3 and 1.6 kilos. The cerebral cortex (that is, the surface of the brain) houses about 22,000 million neurons, as expressed in the most recognized medical studies.
Metabolism mobile generates the biochemical energy that the brain uses to trigger the neural reactions . The energy is received by dendrites and emitted in the axons in the form of chemical molecules that are called neurotransmitters .
The brain is the organ responsible for controlling and coordinating all the movements we perform and for processing the information sensory On the other hand, it is dedicated to regulating homeostatic functions , such as blood pressure, body temperature and heartbeat.
In short, the brain is responsible for learning , cognition, memory and emotions. Its operation is done through the interaction between its different areas.
The brain is divided by a longitudinal fissure that allows to distinguish between two cerebral hemispheres : he right and the left . In turn, each hemisphere has other fissures, but not so deep, that divide the cerebral cortex into different lobes .
Although both hemispheres are opposite, from a morphological aspect they are not symmetrical. On the other hand, it should be noted that only the human seems to show a difference in competences between the two hemispheres. By the way, the following are detailed functions and characteristics of each one, according to studies known so far.
He left hemisphere is responsible for the recognition of writing and consistency between the different words that form a sentence, as well as the understanding of speech, numbers and operations mathematics and logical, and even of the abstraction necessary to express ideas orally or gesturally. This region of our brain is considered as the origin of our expressive capacity, and an injury that affects it can generate terrible disorders in its functions, such as speech and mobility of the right half of our body, although the severity of the consequences depends directly on the type of damage suffered.
While science has failed to decipher the mechanisms used by the brain to start from a certain group of ideas, that have been converted into words, relate them to each other and finally build a more complex sentence or idea, it is believed that before assigning a word to a concept, the mind tries to understand it independently; That is why we are able to learn different languages, and to look at knowledge from various cultural perspectives. It is worth mentioning that intelligence tests they focus mainly on the performance of the left hemisphere, since most of their functions are related to consciousness, analysis and measurement, accuracy and expressiveness.
He right hemisphere, in a complementary way, it has in its power the integration of visual and sound information, to collaborate with the orientation in the space and to understand the world through feelings and sensations; It works in an almost opposite way to the left, trying to combine the concepts into a whole, instead of dividing them into small portions. This hemisphere is considered the most active in people with art skills in general. A very interesting example explains that if we unexpectedly meet someone we know, it is precisely this region that performs the relevant facial recognition, although it needs the subsequent work of the left hemisphere to find in our memory Your name and other personal information.