Completely locked-in man uses brain-computer interface to communicate
A two-year study paves the way for new technologies for people with severe paralysis. Neuroscientists in Switzerland and Germany have enabled a person with complete paralysis, who cannot speak, to communicate via an implanted brain-computer interface (BCI). The clinical case study has been ongoing for more than two years with the participant who has advanced amyotrophic lateral sclerosis (ALS) – a progressive neurodegenerative disease. With further development, the approach described in this study could enable more people with advanced ALS to maintain communication. The brain signals are picked up by implanted microelectrodes and decoded by a machine learning model in real-time. Using auditory neurofeedback, the participant is able to choose 'yes' or 'no' to confirm or reject the letters of the alphabet, ultimately forming whole words and sentences.
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