They Can See Your Dreams

File under “Holy Cow”.

Visual image reconstruction allows us to reconstruct images that a person sees, displaying complex perceptual contents as they are represented in the brain….

In this study, we developed a method to reconstruct visual images by combining local image decoders that predict local image contrast at multiple spatial scales, using brain activity patterns measured by fMRI scanners. Using this method, we can reconstruct arbitrary visual images, including geometric figures and alphabet letters, which are not used to train the decoders.

More here with an astonishing video of what a person is seeing.

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