A team of doctors affiliated with the University of Western Ontario in Canada has documented a case in which a terminal patient removed from life support continued to experience brain wave activity for approximately 10 minutes after they had been pronounced clinically dead. In their paper published in The Canadian Journal of Neurological Sciences, the team describes the circumstances of the unusual event and acknowledge that they have no explanation for what they observed.
For many years, doctors have used a handful of tools to determine if someone has died—a lack of pupil dilation, heart stoppage, lack of breathing, etc. But one test has stood above all others—an EEG reading. Even if the heart is beating and a person is breathing, if the brain stops processing electrical signals, that person is considered clinically dead—though in some cases they may be labeled as brain dead. But what if a person’s heart stops beating, meaning there is no blood flow to the brain, and the brain continues to show delta wave bursts for up to ten minutes? Prior to this event occurring in Canada, it was thought to be an impossibility. . . [Full text]