Your friends may matter to you in ways that you can't even see - at the level of neural circuitry in the brain.
It turns out that the brain's frontal midline, an area between the two hemispheres that is associated with socialization and the way you think about yourself, also shows a greater response from friends than strangers, even strangers with similar interests and lifestyles, said Fenna Krienen, graduate student at Harvard University and lead author of a new study on the subject.
"What we ended up finding is that closeness really seems to matter to these circuits in the brain much more than similarity," she said.
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