This item is taken from the monthly magazine Sciences et Avenir n°950, dated April 2026.
Nothing is more secret than our thoughts… but not for much longer. Neurotechnology is advancing at breakneck speed, illuminating every shadowy corner of our minds. It is now possible to guess the movement a paralyzed person might want to make or to decode the speech of those who can no longer speak. How? Thanks to a range of devices that probe our brain activity, whether invasive—brain implants—or non-invasive, such as electroencephalography (EEG) or magnetic resonance imaging (MRI). Collected from the brain, this data is then analyzed by increasingly sophisticated artificial intelligence (AI), which is able to "read" what we think and "see" what we imagine.
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