Can a brain scan tell what you are seeing?

Alan went to UC Berkeley to visit with Dr. Jack Gallant. Gallant’s research revolves around the visual system and how our brain interprets what we see. Gallant puts participants in a scanner and shows them movies, and his computer algorithm recreates what people see while in the scanner. Dr. Nita Farahany of Duke University posits how this technology might theoretically be used in court.