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Seeded on Wed Feb 6, 2008 3:34 AM EST (Yahoo! News)
CHICAGO (Reuters) - Brain scans of people in chronic pain show a state of constant activity in areas that should be at rest, U.S. researchers said on Tuesday, a finding that could help explain why pain patients have higher rates of depression, anxiety and other disorders.
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They said chronic pain seems to alter the way people process information that is unrelated to pain.
"It seems that enduring pain for a long time affects brain function in response to even minimally demanding attention tasks completely unrelated to pain," the researchers wrote in the Journal of Neuroscience.