From 1983 to 2006, the Belgian man Rom Houben was misdiagnosed as a coma patient. In fact, doctors say, he was conscious for all those years, but incapable of communicating with doctors or family members who leaned over his bedside. But neuroscientist Steven Laureys finally caught the 23-year mistake. Laureys just published a paper on the case in BMC Neurology, spurring wonder at the remarkable case—and skepticism that Houben is truly "communicating" now. Houben was paralyzed in 1983 after a vicious car crash, and doctors incorrectly diagnosed him as being in a persistent vegetative state until 2006.