160721-N-II118-004 ST. LOUIS (July 21, 2016) Members of the 58th Cardinal Division take the oath of enlistment during a pre-game ceremony at Busch Stadium. Forty-eight recruits from Navy Recruiting District St. Louis were sworn into the Navy prior to a baseball game between the St. Louis Cardinals and San Diego Padres.
Dopamine is a neurotransmitter that helps control the brain's reward and pleasure centers. Dopamine also helps regulate movement and emotional responses, and it enables us not only to see rewards, but to take action to move toward them. Dopamine deficiency results in Parkinson's Disease, and people with low dopamine activity may be more prone to addiction.
The action of dopamine occurs via dopamine receptors, D1-5. Dopamine reduces the influence of the indirect pathway, and increases the actions of the direct pathway within the basal ganglia. When there is a deficiency in dopamine in the brain, movements may become delayed and uncoordinated. On the flip side, if there is an excess of dopamine, the brain causes the body to make unnecessary movements, such as repetitive tics. Dopamine in pleasure reward seeking behavior. Dopamine is the chemical that mediates pleasure in the brain.