Welcome to the dopamine hijack. Modern life is designed to give you constant hits of dopamine—the brain chemical linked ... another dopamine spike—but when you get them, they never feel ...

New research out of Michigan State University expands on current understanding of the brain chemical dopamine, finding that it plays a role in reducing the value of memories associated with rewards.

At first, a brain chemical called dopamine is essential ... As the mouse becomes more experienced with fighting, this dopamine spike becomes less dramatic, supporting a central role of the ...