Inhibitory Gating of Single Unit Activity in Amygdala: Effects of Ketamine, Haloperidol, or Nicotine

Tone responsiveness and inhibitory gating persists in a subset of neurons after glutamate N-methyl-D-aspartate receptor blockade. Dopamine and nicotine modulate gating in these normal animals and have similar effects of enhancing responsiveness to auditory stimulation at the single unit and evoked potential level.