Assertion: addict's brain | /r/RelatedTo | serotonin
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text: Past research has primarily focused on dopamine, but scientists have also found that cocaine use induces changes in the brain related to other neurotransmitters—including serotonin, gamma-aminobutyric acid (GABA), norepinephrine, and glutamate.37 Researchers are currently testing medications that act at the dopamine D 3 receptor, a subtype of dopamine receptor that is abundant in the emotion and reward centers of the brain.38 Other research is testing compounds (e.g., N-acetylcysteine) that restore the balance between excitatory (glutamate) and inhibitory (GABA) neurotransmission, which is disrupted by long-term cocaine