Iloperidoneis an atypical antipsychotic for the treatment of schizophrenia. Iloperidone is a monoamine directed towards acting upon and antagonizing specific neurotransmitters, particularly multiple dopamine and serotonin receptor subtypes. It is considered an ‘atypical’ antipsychotic because it displays serotonin receptor antagonism, similar to other atypical antipsychotics. The older typical antipsychotics are primarily dopamine antagonists. Iloperidone performed well against a prepulse inhibition (PPI) experiment, which was designed to gauge the extent of sensory gating in rats, a process disrupted in schizophrenia. Prepulse inhibition is the reduction in the amount of startle the subject gives when presented with a non-startling stimulus. Those exhibiting high levels of psychosis present a deficit in PPI. Psychosis induced using PCP, apomorphine, and cirazoline, were all prevented with the concurrent administration of iloperidone.
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