Patients completely stuck got, first, using a computer that reads signals in the brain, tells the BBC. With this method, and through the reading of thoughts, the patients were able to be able to answer basic questions, such as "yes" and "no". The use of this computer was made within the scope of a study, published in the journal PLOS Biology, and has been tested on four people at the Center Wyss in Switzerland. These patients suffer from amyotrophic lateral sclerosis, a neurodegenerative disease progressive, in which the brain eventually loses, over time, the ability to control all the muscles of the body. In spite of the patients lose their motor skills, still have the capacity to think and reason and some can even communicate from the movement of the eyes. However, and in this case, none of the four could do it.
Ujwal Chaudhary, professor and responsible for the research, believes this technological advancement a plus for patients.
This makes a big difference in the quality of life of each patient. Imagine if the people did not have any means of communication, and suddenly couldn’t say 'yes' or 'no', this would cause a large impact," explains Ujwal Chaudhary.
The activity of the cells of the brain can change the levels of oxygen in the blood which, in turn, will change the color of the blood. Second, what explains the researcher, the reading machine signals to the brain, with an accuracy of 75%, enabled him to look and remove information of the characteristics of the brain of four patients, using a light that has detected the color of the blood, through a technique called near-infrared spectroscopy (near infrared spectroscopy, in Portuguese). It was from there that everything started and came to the phenomenon of communication with the patient paralyzed.
This method is being used now to basic issues of day-to-day, how to realize if the carriers of the disease have pain or if they want a visit from family members.
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