Dopamine

Dopamine: Dopamine is a neurotransmitter — a chemical messenger that helps neurons communicate with one another. Depending on the receptors and neural circuits involved, dopamine can have both excitatory effects (making neurons more likely to fire) and inhibitory effects (making them less likely to fire). Through these actions, dopamine helps regulate movement, attention, learning, motivation, decision-making, and reward-related processes. Although often described as the brain’s “pleasure chemical,” dopamine is more accurately understood as a neurotransmitter involved in assigning importance to experiences, anticipating rewards, learning from outcomes, and directing behavior toward meaningful goals. Dopamine operates through several brain pathways, each serving different functions. Changes in dopamine activity have been linked to conditions such as Parkinson’s disease, ADHD, bipolar disorder, schizophrenia, substance use disorders, and obesity.