Recreational drugs, such as PCP and ketamine, lead to schizophrenia-like symptoms by
A. impairing the functioning of glutamate and one of its receptors, NMDA.
B. increasing the activities of glutamate.
C. increasing the levels of norepinephrine and its adrenergic receptors.
D. impairing the effective functioning of acetylcholine.
Answer: A
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