The brain's "pain sensor" has been found, researchers say. When you step on a thumbtack or hit your funny bone, this is the part of your brain that lights up.
Researchers conducted imaging scans of the brains of people who were experiencing pain waxing and waning over several hours. They identified a region of the brain called the dorsal posterior insula, which became active in response to how much pain a person felt.
"We have identified the brain area likely to be responsible for the core 'it hurts' experience of pain," Irene Tracey, who is the lead author of the study and a professor of anesthetic science at the University of Oxford in England, said in a statement.
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