Which of the Following Statements Counters the "Circumstantial Evidence" for the Dopamine

question 4

Multiple Choice

Which of the following statements counters the "circumstantial evidence" for the dopamine theory of schizophrenia?

• A) Antipsychotic drugs (neuroleptics) act as dopamine agonists, increasing the amount of dopamine in the brain.
• B) A significant number of people with schizophrenia are not helped by dopamine antagonists.
• C) The drug L-dopa, a dopamine agonist, is used to treat schizophrenic symptoms in patients with Parkinson's disease so it cannot be used for schizophrenia.
• D) Amphetamines, which activate dopamine, can lessen psychotic symptoms in people with schizophrenia.

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