In a recent experiment, scientists showed six subjects 300 different 'training' faces while undergoing fMRI scans. They used the data to create a statistical library of how those brains responded to individual faces, and then proceeded to show them new sets of faces while they were undergoing scans. Using that fMRI data alone, researchers used their statistical library to reconstruct the faces their subjects were viewing. Continue reading to see some of the results.
According to Marvin Chun, professor of psychology, cognitive science and neurobiology and an author of the paper in the journal Neuroimage: "It is a form of mind reading. But they can only tell you they are viewing an animal or a building, not what animal or building. This is a different level of sophistication."