Studies Involving Chronic PCP or Ketamine Administration to Non-Human Primates

Studies involving chronic PCP or ketamine administration to non-human primates and rodents have demonstrated all of the following neurobiological changes except

A) increased NMDA receptor binding in the prefrontal cortex.
B) a reduction in tyrosine hydroxylase immunoreactivity in the prefrontal cortex.
C) neuronal cell death in the prefrontal cortex.
D) a reduction in excitatory glutamatergic synapses in the prefrontal cortex.