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Related Experiment Video

Updated: Mar 22, 2026

Investigating the Effects of Antipsychotics and Schizotypy on the N400 Using Event-Related Potentials and Semantic Categorization
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Impaired context processing during irony comprehension in schizotypy: An ERPs study.

Sarah Del Goleto1, Milena Kostova1, Alain Blanchet1

  • 1Laboratoire de Psychopathologie et Neuropsychologie (EA 2027), Université Paris 8 Vincennes - Saint-Denis, France.

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
|April 28, 2016
PubMed
Summary

Individuals with high schizotypy show impaired context processing, impacting their ability to understand social cues like irony. This deficit in mentalizing is linked to difficulties in interpersonal functioning within the schizophrenia spectrum.

Keywords:
Context processingIronyN400P600SchizotypyTheory of mind

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Area of Science:

  • Cognitive Neuroscience
  • Psychiatry
  • Neuroimaging

Background:

  • Mentalizing deficits are central to schizophrenia spectrum disorders, causing social impairments.
  • The precise mechanisms behind these mentalizing deficits are not well understood.
  • Schizotypy, characterized by personality traits resembling schizophrenia symptoms, offers a model to study these mechanisms.

Purpose of the Study:

  • To investigate if context processing deficits underlie mentalizing difficulties in schizotypy.
  • To examine the role of semantic and pragmatic context processing in irony comprehension.
  • To explore the neural correlates using event-related brain potentials (ERPs).

Main Methods:

  • Forty participants were divided into high and low schizotypy groups based on the Schizotypal Personality Questionnaire (SPQ).
  • Event-related brain potentials (ERPs) were recorded during an irony comprehension task involving short stories.
  • Participants read stories ending in literal, ironic, or incompatible statements to elicit N400 and P600 components.

Main Results:

  • In the low schizotypy group, significant N400 (semantic) and P600 (pragmatic) effects were observed for context processing.
  • In the high schizotypy group, neither the N400 nor the P600 effects related to context processing were significant.
  • These ERP abnormalities in the high schizotypy group correlated with higher interpersonal SPQ factor scores.

Conclusions:

  • Context processing deficits are strongly associated with mentalizing impairments in individuals with high schizotypy.
  • These findings highlight the link between impaired context processing, reduced mentalizing abilities, and interpersonal difficulties in the schizophrenia spectrum.
  • Understanding these mechanisms is crucial for addressing social handicaps in schizophrenia spectrum disorders.