Final answer:
Antipsychotics reduce the neurotransmitter dopamine in the brain to treat symptoms of schizophrenia associated with overactive dopamine neurotransmission.
Step-by-step explanation:
Antipsychotics typically reduce the brain neurotransmitter dopamine. These medications are known to work by serving as antagonists for dopamine receptors. This means that antipsychotics can prevent dopamine released by one neuron from signaling information to adjacent neurons, effectively blocking dopamine's effects. This action is pertinent in the treatment of certain symptoms of schizophrenia, which are associated with overactive dopamine neurotransmission. As a result, psychotic symptoms such as hallucinations, delusions, and disorganized thinking tend to decrease.