Computer is possible to reproduce images of dreams or memories, study says

U.Sscientists have successfully decoded nerve signals in the brain using computer models and a real-time imaging scanning system, and identified a picture that a person has just seenThe paper was recently published in the electronic edition of the journal NatureThis means it is possible to use computers to reproduce dreams, imaginations or memories in the human brain, the researchers saidThe team, led by Professor Jack Garland, a neuroscientist at the University of California, Berkeley, selected two colleagues for the trialIn the first phase, they each viewed 1,750 images, including animals, buildings, food, outdoor landscapes, indoor landscapes, man-made objects, and so on, while the researchers used functional magnetic resonance imaging (fMRI) scanners to monitor the activity of their visual cortexBased on the data obtained, the researchers created a mathematical model on the computer to analyze the brain's response to different visual characteristicsIn the second phase, the two subjects looked at an arbitrary selection of 120 new images, while fMRI scanners continued to record their brain signalsThrough the analysis of mathematical models, the computer predicted 110 and 86 images seen by the two subjects, with accuracy rates of 92% and 72%When the number of pictures the subjects saw increased to 1,000, the computer's performance also declined, but the accuracy of one of them was still 82 percent"Image recognition technology is like a game that magicians often play - guess the cards you choose, " says Prof GarangThe magician will let you choose one from a bunch of cards, remember in mind, and then put it back, and the magician will pick out your card accurately"The researchers estimate that even if the number of pictures were to become 1 billion, computers would be about 20 percent accurate in "decoding" brain signalsOne billion is equivalent to the number of images you can search on google, that is, if you look at a picture on the Internet, there's a one-and-a-half chance that you'll be guessed by a computer modelMicroscopy shows the development of complex brain-reading devices to tell your secret microscopic technology, making it easier for scientists to understand the microscopic world of complex brain cellsThomas Dillink of the University of California used double photon microscopy to capture the fine microstructure of cerebellum tissueGene Rivett of Harvard University used cofocus microscopy to capture the brain stem tissue slices These provide a solid foundation for understanding the nature of the brain "Our results suggest that it will soon be possible to reconstruct the visual images of the human brain based solely on monitoring and analysis of their perceived activity," Professor Garang wrote in his paper Imagine a normal 'brain-reading' device that presents the images you see anytime, anywhere, and even dreams and imaginations can become visible "
mind-reading is expected to interrogate prisoners undercover or have nowhere to hide although the new study is a long way from fully revealing the inner secrets of humans, but this technological trend has attracted a lot of attention in the scientific community." It has been pointed out that the new study is a double-edged sword, with the advantage that in the future it will be possible to detect hidden people, and interrogation of prisoners will be very simple The new research has also made it possible to repair nerve sciatica For example, a paralysed patient, despite a spinal cord injury, can perform simple movements by reading instructions from the brain But there are downsides: a world without privacy can be terrible, and if you're a spy undercover agent, there's nowhere to hide (Con-Yu Meijin)