āMind-captioningā AI decodes brain activity to turn thoughts into text ā Nature
āMind-captioningā AI decodes brain activity to turn thoughts into text
A non-invasive imaging technique can translate scenes in your head into sentences. It could help to reveal how the brain interprets the world.
By Max Kozlov
Functional magnetic resonance imaging is a non-invasive way to explore brain activity. Credit: National Institute of Mental Health / National Institutes of Health / SPL
Reading a personās mind using a recording of their brain activity sounds futuristic, but itās now one step closer to reality. A new technique called āmind captioningā generates descriptive sentences of what a person is seeing or picturing in their mind using a read-out of their brain activity, with impressive accuracy.
The technique, described in a paper published today in Science Advances1, also offers clues for how the brain represents the world before thoughts are put into words. And it might be able to help people with language difficulties, such as those caused by strokes, to better communicate.
The model predicts what a person is looking at āwith a lot of detailā, says Alex Huth, a computational neuroscientist at the University of California, Berkeley. āThis is hard to do. Itās surprising you can get that much detail.ā
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