Release date: 2017-02-09
According to a report by the BBC on February 1, scientists say that patients who have completely lost any ability can finally communicate. Medical staff use a computer that recognizes human brain signals to understand the patient's thoughts. These patients are medically known as locked-in patients.
They are usually a syndrome in which all the muscles of the whole body (except the eyes) are paralyzed due to certain diseases, resulting in patients being unable to move and unable to speak autonomously, but their consciousness is awake. Some patients have even eyes, and they are called complete atresia syndrome.
Many patients suffer from severe amyotrophic lateral sclerosis. The patient's brain loses the ability to control muscles. In the end, the patient completely loses the ability to speak and move, except to be conscious, just like being locked into his body. Same as in the middle."
Now, with this kind of computer implantation, patients can answer simple questions such as "Yes and Nos." One of the patients, when his daughter wanted to marry her boyfriend to ask for his consent and blessing, he repeatedly expressed disagreement with the marriage. The researchers asked the father a total of 10 times. He had disagreed eight times, but his daughter was still married to her boyfriend. The same tests that researchers have done on several patients in Switzerland have shown that although they have a complete atresia, they say they are content.
Often, the activity of brain cells can alter the level of oxygen in the blood, thereby changing the color of the blood. Therefore, scientists can use an approximate infrared spectroscopy technique to spy on the inside of the brain and observe changes in blood color. Then, ask the patient the same question repeatedly, such as "Is your husband called Joachim?" to get an accurate answer. Currently, the accuracy of getting answers in this way is 75%.
Researchers say that with this approach, the quality of life for patients is greatly improved, from being completely uncomfortable to having simple communication. The biggest effect of this method is to know if the patient has pain, or whether to let the family visit. It is very remarkable only from the point of being able to communicate with the outside world.
Source: Li Zongze
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