âMind-captioningâ AI decodes brain activity to turn thoughts into text â Nature
âMind-captioningâ 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 personâs mind using a recording of their brain activity sounds futuristic, but itâs now one step closer to reality. A new technique called âmind captioningâ 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 âwith a lot of detailâ, says Alex Huth, a computational neuroscientist at the University of California, Berkeley. âThis is hard to do. Itâs surprising you can get that much detail.â
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