Many people still believe that the brain is involved only in 10%, alcohol kills neurons, and games on the development of memory and logic really help to become more intelligent. It’s time to get rid of these errors.
1. We use only 10% of the brain
Neuroscientist Barry Gordon (Barry Gordon) has led several of evidence against the theory of ten percent.
Brain scans using MRI and positron emission tomography revealed that there are no unused area. In addition, numerous studies have found brain departments that do not have a specific function.
Theory ten percent contrary to the principles of evolution. The brain consumes too much energy to the body allowed him to do nothing. In line with this, scientists observed the degeneration of unused brain cells.
2. People with well-developed left brain more rational, and with a strong right – more creative
Scientists from the University of Utah examined over a thousand people and found no evidence that they use mainly the left or right hemisphere. All participants, including scientists, equally use both hemispheres of the brain.
However, the predominant use of one hemisphere to perform specific functions still real. Scientists call this lateralization. For example, right-handed language skills controlled by the left hemisphere of the brain. However, this does not mean that brilliant writers or speakers use the left hemisphere more than the right, or that there were more neurons.
3. Alcohol kills brain cells
When the ethanol enters the blood, liver enzymes convert it into toxic acetaldehyde and then to acetate, which in turn splits into water and carbon dioxide and excreted. However, the liver has time to deal with only a certain amount of ethanol. If alcohol flows faster than the liver can break down him, he continues to travel the blood prior to processing.
But, when the alcohol reaches the brain, the cells do not die. Instead inhibited rate of reaction between the dendrites in the cerebellum. Therefore, people in strong alcoholic intoxication so clumsy move and could not keep his balance.
Researchers at Washington University in St. Louis came Ethanol Enhances neurosteroidogenesis in hippocampal pyramidal neurons by paradoxical the NMDA receptor activation to the same conclusion. Ethanol does not kill neurons. Even in direct contact with them, it just prevents the transfer of information between nervous cells.
4. Nerve cells do not regenerate
For a long time, scientists believed that people are born with a certain set of nerve cells and for the lives of their number only is reduced. But studies have found that adults, too, there are new nerve cells.
Peter Eriksson (Peter Eriksson) from the Institute of Neuroscience and Psychology at the University of Gothenburg in Sweden and Fred Gage (Fred H. Gage) from the Salk Institute for Biological Studies in California have found Neurogenesis in the adult human the hippocampus neurogenesis in the brain of a person 72 years of age.
Ericsson and his colleagues used a chemical marker for the identification of new neurons. Since mature neurons are not able to share, the emergence of new cells in the brain is due to the proliferation of stem cells and their development into mature neurons.
5. Certain areas of the brain perceive the information only on the specific sensory organs
Previously it was thought that the brain has a certain area, sharpened for specific tasks, such as the visual cortex that exists solely for the perception of visual information. However, scientists have proved that the brain is very flexible, can adapt and use zones and no flow of information from the senses, supposedly designed for them.
For example, blind people, reading books in Braille, use the same area of the brain that are involved while reading from sighted. In addition, people who are blind visual areas of the brain are activated by hearing. Perhaps that is why they have more acute hearing.
Another proof of the plasticity of the brain – the phantom pain in amputees. When a person loses an arm or leg, the brain area responsible for the sensitivity in this area is no longer encouraged. Then the brain forms new connections between neurons so that the excitation in the areas responsible for motor function and sensitivity is retained in both hemispheres. Moreover, the dead zone is stimulated by signals from adjacent to the amputated limb areas of the body. Because of this, a person can clearly feel that touch his fingers amputated when actually touching another part of the body.
Another example – when switched off due to shock neurons that send signals to the arm. With the help of therapy can help the neighboring areas of the brain to take over functions of the dead zone, and people will be able to move the limb.
6. Games for the development of the brain make you more intelligent
Scientists from the Research Institute of Cambridge conducted a scientific experiment Putting brain training to the test Designed to prove the futility of popular games for brain development. During his 11 430 members a few times a week, playing educational games, which were to improve memory, attention, visual-spatial orientation, planning and establishment of cause-and-effect relationships.
After six weeks of training in each game was seen progress. However, there was no evidence that games help develop these skills in general, because of new jobs, for which trainees are required cognitive function, no improvement was observed.
In other words, participants simply had training to perform specific tasks, but do not become more intelligent, since the new challenges their ability to remain at the same level.
7. With age, brain function weaken
Memory and logical thinking is really getting worse as we get older, but other brain functions such can be said. For example, the adoption of moral decisions, managing emotions, and reading social situations in the 40-50 years are working much better than 20 or 30 years.
At the same time there are ways to prevent the age-related decline in cognitive function and keep the brain young and healthy .
8. We remember what was
In fact, we remember a very limited number of visual images and sensations and can not cover the whole situation fully, even in the present moment. Remembering the story of the first time, we lose even more detail, in the second – do not turn to the past situation, and to his half stёrshemusya memories of her.
Thus, the further event, the smaller the details, we can remember the story not yet transformed into a skeleton. Therefore, we can not say with certainty that we remember exactly what it was.