The human brain is constantly undergoing chemical processes. These building blocks play a role in everything from emotions and feelings to actions and choices. Four major chemicals affect us from day to day: dopamine, serotonin, oxytocin, and endorphins. Dopamine is involved in numerous brain and body transactions including regulating movement and intimate feelings. The chemical is especially known for its relation to positive feelings.
Neurotransmitters move information between neurons or brain cells. These interactions take place across the whole body, but the mesolimbic pathway is the area that affects feelings such as passion and addiction, where dopamine plays a large role. Cells here send their information to other vital areas of the brain including the cortex. Dopamine is also involved in the reward process, like how our mouths water when we see pizza, even before we take a bite.
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