Antipsychotic (neuroleptic) drugs act by

A) blocking dopamine synapses in the brain.
B) increasing the flow of blood to the anterior portions of the cerebral cortex.
C) causing memory loss.
D) increasing activity in both sensory and motor neurons.

Antipsychotic drugs function by blocking dopamine synapses in the brain, specifically the dopamine D2 receptors. This reduces the levels of dopamine activity in the mesolimbic dopamine pathway, which is often associated with positive symptoms of psychosis such as hallucinations and delusions.