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A New Way To Test For Signs Of Consciousness In Unresponsive, Brain-Injured Patients
National Public Radio

Patients who are brain-injured and unresponsive may appear unconscious, but a study published Wednesday in the New England Journal of Medicine repurposed a widely-used technology to demonstrate that the brains of some of these patients are still active.

The researchers used electroencephalography or EEG to look for signs of brain activity in a group of brain-injured patients, finding that 15% of those studied had residual activity despite being unable to speak or move.