Scientists have developed a decoder that, via brain imaging and artificial intelligence, manages to translate a person's thought into language without them expressing themselves. The main purpose of this "language decoder" is to help patients who have lost the use of speech to communicate their thoughts via a computer.

Although medically oriented, this new device nevertheless raises questions about the invasion of "mental privacy", concede the authors of the study published in Nature Neurosciences. But they point out that their tool only works after brain training by spending long hours in an MRI machine.