A 30-year-old male is brought to the emergency department by…
A 30-year-old male is brought to the emergency department by police after displaying violent behavior, confusion, and hallucinations. His girlfriend reports he smoked marijuana earlier in the evening but suspects it was laced with another substance, as he became belligerent and agitated shortly afterward. On exam, he is disoriented, has nystagmus, and requires sedation for safety. The clinical team suspects phencyclidine (PCP) toxicity. Which of the following neurotransmitter receptors is primarily affected by phencyclidine (PCP)?