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In the frontal lobes, dopamine plays a role in controlling the flow of information from other areas of the brain. Dopamine disorders in the frontal lobes can cause a decline in neurocognitive function, particularly those linked to the frontal lobes, such as memory, attention and problem solving.
Dopamine is a neurotransmitter, a chemical used to carry messages between neurons. Dopamine is produced in several areas of the brain, including the substantia nigra. Dopamine's effects are complex and poorly understood, but dopamine appears to play a role in signaling reward in the brain.arkinson's disease destroys dopamine-producing neurons in the substantia nigra, and causes motor symptoms (dyskinesia, tremor, rigidity) as well as cognitive symptoms. The motor symptoms can be treated by drugs that increase brain dopamine levels.