When you see an unconscious patient in a movie, you sometimes see their thoughts onscreen (like in The 9th Life of Louis Drax, above) or at least hear a voiceover.
That may not entirely stay in science fiction. Adrian Owen, neuroscientist and Professor of Cognitive Neuroscience and Imaging at the University of Western Ontario, Canada, and his research team are using brain-computer interfaces with advanced technology to get answers directly from people who can’t answer for themselves any other way. Any critical decisions for patients unable to communicate are usually made for them.
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