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Saccadic eye movements, schizotypy, and the role of neuroticism.

Research output: Contribution to journalJournal article

Published

  • Ulrich Ettinger
  • Veena Kumari
  • Trevor J. Crawford
  • Vanja Flak
  • Tonmoy Sharma
  • Robert E. Davis
  • Philip J. Corr
Journal publication date01/2005
JournalBiological Psychology
Journal number1
Volume68
Number of pages18
Pages61-78
Original languageEnglish

Abstract

We investigated the relationships of anti- and prosaccades with psychometric schizotypy. One aim was to estimate the role of negative emotionality and general psychopathology (i.e. neuroticism) in this relationship. 115 non-clinical volunteers underwent infrared oculographic assessment of antisaccades and prosaccades. Schizotypy was assessed with the Personality Syndrome Questionnaire (PSQ-80), the Rust Inventory of Schizotypal Cognitions (RISC), and Eysenck Personality Questionnaire-Revised (EPQ-R) Psychoticism. Higher positive schizotypy scores predicted increased antisaccade errors (RISC) and greater prosaccade spatial error (PSQ-80 Unreality). Greater thought disorder (PSQ-80 Activity) predicted shorter prosaccade latencies. EPQ-R Neuroticism was substantially correlated with schizotypy but was not related to saccadic measures and did not account for their relationship with schizotypy.We conclude that saccadic performance patterns in schizotypy are not due to negative emotionality or general psychopathology, but specific to schizophrenia spectrum signs and symptoms.