Tuesday, January 31, 2023
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Meta* develops AI for “mind reading”

Meta has created a “brain decoder” that uses an AI model to decode brain activity and convert it into speech. The tool can be used for mental communication between users who pronounce words and phrases in their heads. About the research company told on the corporate blog.

Meta technology differs from similar developments in that it is based on non-invasive methods for recording brain activity. The company used electroencephalography (EEG) and magnetoencephalography (MEG), which use only external sensors. Data from EEG and MEG is less accurate than information from sensors implanted in the brain, so a much larger amount of initial data had to be processed to be more efficient.

AI recorded how the participants’ brains reacted to audiobooks and individual phrases, and then isolated the necessary words from the text and compiled a “dictionary”, according to which they implemented the reverse process – converting thoughts into speech. The researchers achieved an accuracy of 73% using a set of 793 words most commonly used in everyday life.

In the future, AI, as conceived by the researchers, will be able to more accurately identify words and phrases using a wider source vocabulary. The development should help not only millions of people who are unable to speak or write, but also in the study of the human brain.

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* Meta is recognized as an extremist organization on the territory of the Russian Federation

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