Completely paralyzed man was able to communicate again thanks to a brain implant

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Amyotrophic lateral sclerosis (or sober Charcot disease) is characterized by modern paralysis muscles, and individuals may ultimately find themselves without sober means of communication. But a new case study proves that voluntary brain-based conversation is likely, even in a state of complete confinement. After a few weeks, the man with ALS and in a state of complete isolation succeeded in selecting letters and creating terms, using a device implanted in boy brain.

Amyotrophic lateral sclerosis (ALS) is a disease neurodegenerative plot that leads to developing paralysis of muscle tissue, up to total inability to communicate (in the majority of cases). As motor neuron degeneration progresses, the isolation can be extreme as sufferers suffer from it, and most of them die within five years of the analysis.

When a person with sober ALS can no longer speak, they usually use an eye camera to select letters on a screen. Later in the course of the disease, she may answer yes or no questions by the movement of her eyes. But by the package, it can even lose this use and spend months or even years being able to hear without communicating. While other researchers have evaluated conversation in people who still have control of their muscle tissue, it was not known until now whether the conversation is based on neurons remains possible in a state of complete blockage, write at the beginning of their new study the researchers of the Wyss Middle for Neuroengineering and Bio, Geneva.

The player studies a sober man years reached sober ALS began working with a sober looking sober team 2018, while he could still move his eyes. This study answers a long-standing question, whether people with full locked-in symptoms [ou syndrome d’enfermement, à savoir des personnes qui ont perdu y compris le mouvement des yeux] also lose the brain’s ability to generate commands could communicate, Jonas Zimmermann, neuroscientist at Center Wyss Geneva and co-author of the study, said in a press release.

Communication: auditory neurofeedback to confirm or reject letters

The researchers inserted two microelectrode arrays 64 (3.2 millimeters wide) into the individual’s motor cortex, part of the brain controls the movement which. The goal was to generate brain activity by testing different movements. But the movements of the hands, feet, head and eyes did not bring anything coherent. low-level method in which neuronal activity is measured and presented to the individual in real temperatures, the latter can then change his own brain signals. As the electrical discharge from nearby neurons under the implant accelerated, a clear tone rose. The researchers required the gamer to change this pitch using any strategy and by day 12 they were able to match it to a target tone.

Using auditory neurofeedback, the patient was able to choose yes or no to confirm or reject a letter or groups of letters, depending on what they wanted to communicate in terms of phrases. After about 3 weeks of using the system, it started producing terms like: For food, I want curry with potatoes, then bolognese and potato soup.

However, a technique has been designed so specifically for the individual, and how long the system will last remains unknown. At the hair and measure, the responses of the individual would have become more noticeably slow and difficult to discern, according to the New You are able to Periods.

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