A third theory, the «dopamine hypothesis,» points to elevated levels of the brain chemical dopamine. (sciencedaily.com)
The level of the reward chemical dopamine you have in a brain region may determine your reply. (newscientist.com)
Although many are aware that elevations of the brain chemical dopamine play a critical role in cocaine's ability to produce a «high» — feelings that trigger the spiral into addiction — the actions of cocaine are far more complex. (sciencedaily.com)