 from Cornell University, followed by his Doctor of Medicine at Yale University.Aghajanian did his research on the actions of LSD by which it produces hallucinations in the brain, and he has also uncovered the therapeutic mechanism of atypical antipsychotic drugs.He also found that application of serotonin (5-HT) produces an increase in the frequency and amplitude of spontaneous excitatory postsynaptic potentials in layer V pyramidal cells of the neocortex and transitional cortex by whole-cell recording in rat brain slices.