Brain scans may help doctors track real evidence of a patient's pain level, suggests a study published in the The New England Journal of Medicine. Using functional magnetic resonance imaging, scientists were able to study activity patterns across brain regions known for signaling pain to isolate evidence of experiencing physical pain. "What we're evolving towards is trying to predict quantitatively from patterns of brain activity how much an individual is feeling," said neuroscientist Tor Wager.

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