This brain chemical is a sort of messenger that ... in the brain by measuring the binding of a radioactive compound that competes with dopamine for the same brain receptors. The fMRI scans ...

Dopamine, a chemical messenger in the brain, used to be neuroscience jargon — something you’d read about in a biology textbook. But today, dopamine has become a cultural catch-all, shorthand ...

It's all about a chemical compound in peppers called capsaicin ... In response to the pain, your brain releases endorphins and dopamine. Combined, these chemicals create euphoria similar to ...