N400 abnormalities in late life schizophrenia and related psychoses.

  title={N400 abnormalities in late life schizophrenia and related psychoses.},
  author={John M. Olichney and Vicente J. Iragui and Marta Kutas and Ralph Nowacki and Dilip V. Jeste},
  journal={Biological psychiatry},
  volume={42 1},
The N400, an event-related brain potential (ERP) sensitive to semantic congruity, has been reported to have increased latency and/or reduced amplitude in young adults with schizophrenia. Little is known, however, regarding the N400 in older schizophrenia patients, especially those with late onset. We studied 18 middle-aged and elderly patients with schizophrenia and related psychoses (nine with early-onset psychosis (EOP) and nine with late-onset psychosis (LOP)), and nine normal comparison (NC… CONTINUE READING

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