Some of the symptoms of schizophrenia appear to be caused by excess _______________ activity, and too little _____________ activity
A) dopamine; glutamate
B) glutamate; dopamine
C) GABA; epinephrine
D) epinephrine; GABA
Answer: A
Rationale: Research suggests that individuals with schizophrenia have overactive receptors for the neurotransmitter dopamine. Another neurotransmitter, called glutamate, appears to be underactive in brain regions, including the hippocampus and the frontal cortex, of individuals with schizophrenia.
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