By Tanya Lewis | Live Science | 5 March 2015

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. Continue reading »