A healthy (not schizophrenic) but stressed senior person claims seeing or hearing dead people since childhood. Because that is causing him to much stress now, a psychiatrist prescribed drugs to repress his visions. The drugs worked. He no longer hears nor see any 'ghosts'. What these drugs do (physiologically) to control hallucinatory symptoms?
Answer:
All antipsychotic drugs tend to block the D2 receptors in the dopamine pathways in the brain, so the normal effect of dopamine release in the relevant synapses is reduced.
It is the blockade of D2 receptors in the mesolimbic pathway of the brain which is thought to produce the intended antipsychotic effect.
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