Brain Scans Probe the Limits of Consciousness

New research from scientists at the University of Copenhagen and Yale University may offer a simple, yet powerful way to pull back the curtain on the true status of patients in a coma.

Using a type of Positron Emission Tomography (PET) scanning, the researchers say they were able to predict with 94 percent accuracy whether a coma patient would wake up. Typically, determining who will emerge from a coma is based on a doctor’s bedside exam, and they often make mistakes. They measured patien

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