Current brain-scanning techniques failed to detect Houben's conscious state. Photograph: Getty Images

For 23 years Rom Houben was trapped in his own body, unable to communicate with his doctors or family. They presumed he was in a vegetative state following a near-fatal car crash in 1983.

But then doctors used a state-of-the-art scanning system on the brain of the martial arts enthusiast, which showed it was functioning almost normally.

"I had dreamed myself away," said Houben, now 46, whose real "state" was discovered three years ago and has just been made public by the doctor who rescued him.

Steven Laureys, a neurologist at the University of Liège in Belgium, has published a scientific paper saying Houben could be one of many falsely diagnosed coma cases around the world.

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I watched soemthing like this is an episode of House. interesting.