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What do ERPs and ERFs reveal about the effect of antipsychotic treatment on cognition in schizophrenia?

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What do ERPs and ERFs reveal about the effect of antipsychotic treatment on cognition in schizophrenia?

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Cognitive dysfunction is considered to be a core feature in schizophrenia. It is believed that antipsychotic drugs, especially atypical ones, could improve cognitive functions in schizophrenia patients. Auditory event-related potentials (ERPs) such as mismatch negativity (MMN) and P300 response are potential candidates for objective investigation of pre-attentional and attention-dependent processing in schizophrenia patients, respectively. Both these responses were found to be altered in schizophrenia. Moreover, neurotransmitters play important role in generation of MMN and P300 components. Therefore, these ERPs are potential candidates for monitoring the cognitive changes caused by neurochemical modulation during antipsychotic treatment in schizophrenia patients. In addition, neurochemical ERP generation mechanisms discovered during drug-challenge studies in healthy subjects could explain these ERP findings in patients. To date, no effect of antipsychotic treatment on MMN was observed

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