Inside The Bipolar Brain

Scientists can't point to one lobe that makes a person bipolar, but they have identified several areas that are involved in ways they are just beginning to understand


WHAT IT DOES: Helps the brain process rewards

WHAT HAS GONE WRONG: Studies show overactivity and a 30% loss in gray matter in this region, causing people to lose judgment about how certain behaviors, such as overspending or being sexually indiscriminate, will affect their lives


WHAT IT DOES: Parts of the prefrontal cortex regulate emotion and are instrumental in processing rewards and motivation

WHAT HAS GONE WRONG: Studies show a 20% to 40% reduction in gray matter-the result of a loss of the branches that connect neurons


WHAT IT DOES: One of the brain's emotional centers;...

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