New technology made it possible to control brain waves
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Despite the scientific advances of the last decades, the human brain is still little studied.
Diagnosed the electrical oscillations of the brain are called rhythms. Recently researchers from mit have managed to teach the subjects to manipulate their own alpha-waves, thereby increasing attention to the performance of a specific task. Alpha waves describe the electrical activity of the brain at a frequency of 8-12 Hz. The results of the study, which was published in the journal in the future will give the opportunity to people who are experiencing problems with learning to receive feedback of their brain activity.
How are attention and alpha waves?
Today, the increasing worldwide interest in the use of nanobiodevice — a technology that is widely used in sports and medicine. The technology has previously shown its effectiveness in the treatment of cognitive disorders. As reported in the official Robert Desimone, Director of McGovern Institute for brain research at the Massachusetts Institute of technology, is a completely non-invasive method of control and verification of the role of different types of activities.
In the study, a team of scientists has found that suppressing the alpha waves in one part of the parietal cortex — lobe, responsible for sense of touch, the ability to navigate in space, and attention — the subjects pay more attention to the objects on the screen. It should be noted that the relationship between attention and the alpha waves was established in a previous . However, as the authors of scientific work, until now it remained unclear whether this connection is a by-product of another process, or alpha waves directly control the focus.
In one experiment, subjects were asked to use neuromyopathies, which described their alpha waves. They had to look at the grid pattern in the center of the monitor and to exert mental effort, to increase the contrast of the picture, making it more noticeable. The contrast became more pronounced when the asymmetry of alpha waves on the left and in the right parietal cortex increased on the basis of data obtained by monitoring brain activity. In other words, alpha waves were suppressed in one hemisphere of the parietal cortex, but increased in the other.
There are 8 kinds of rhythms of the brain
The Researchers note that one group of subjects failed to suppress the alpha waves in the left hemisphere, and the other — in the right. Moreover, both groups showed opposite results: an enhanced response or attention to flashes of light in right and left side of the screen, respectively. Surprisingly, after ten minutes of exercise, subjects learned to increase the contrast, potentially increasing control over their attention. After the experiment, the subjects told the researchers that were aware of the fact that control contrast, but didn't know how.
Researchers came to the conclusion that the manipulation of alpha waves really controlled the attention of the subjects. Nevertheless, there remains several important issues, including how it takes control of the brain waves as well as how long they can manage. Moreover, researchers cannot yet say whether this technique can be applied in real life in teaching people with behavioral , or problems with concentration. Also it remains unclear whether this method is applicable to other types of brain waves such as beta waves with Parkinson's disease. At the same time, the experiment seems to be demonstrating that we have an amazing degree of subconscious control over the mechanics of our own brains.
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