
Inside this fMRI machine a test subject in Kyoto is having his mind read to determine which image he sees.
If you had to nominate one modern technology as a mind reading device, the fMRI looks like a good bet. By measuring blood flow fMRI can track activity in your brain, and this opens the window to your mind – it may even allow us to figure out what your eyes are seeing at any given moment. The ATR Computational Neuroscience Laboratories in Kyoto, Japan is able to show a geometric pattern to a test subject and then have a computer program recreate that image by analyzing brain activity gathered by fMRI (NIPS 2009). Scientists at UC Berkeley have used fMRI to study the visual cortex to encode images as brain activity and decode brain activity into images. In other words, for a given image they know how your brain will react, and for a given brain reaction they know the image that would cause it. Researchers at UCB have even managed to do the same with video – their decoding system can create a rough facsimile of what a subject was watching at the time. This is incredible! I had a chance to talk with Jack Gallant of UC Berkeley about these attempts to see what the brain sees. While this technology is still in its very early stages, the work already finished is truly astounding. Check out a video discussing ATR, and pics of research from UCB after the break.















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