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A Brain Scanner That can Reconstruct Your Dreams!
US researchers say it could be a possibility, based on a decoding system devised by them.
The details were disclosed this week in Nature by neuroscientists from the University of California at Berkeley.
The scientists used a functional magnetic resonance imaging machine -- a real-time brain scanner -- to record the mental activity of a person looking at thousands of random pictures: people, animals, landscapes, objects, the stuff of everyday visual life.
With those recordings the researchers built a computational model for predicting the mental patterns elicited by looking at any other photograph. When tested with neurological readouts generated by a different set of pictures, the decoder passed with flying colors, identifying the images seen with unprecedented accuracy, says Brandon Keim, writing in the Wired.
"No one that I know would ever have guessed our decoder would do this well," study co-author Jack Gallant said.
As the decoder is refined, it could be used to explore the phenomenon of visual attention -- concentration on one part of a complicated scene -- and then to illuminate the dimly understood intricacies of the mind's eyes.
"One day it may even be possible to reconstruct the visual content of dreams," Gallant said.
After that, the decoding model could be harnessed for more visionary purposes: early warning systems for neurological diseases or interfaces that allow paralyzed people to engage with the world.
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