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

Ettinger, Ulrich and Kumari, Veena and Crawford, Trevor J. and Flak, Vanja and Sharma, Tonmoy and Davis, Robert E. and Corr, Philip J. (2005) Saccadic eye movements, schizotypy, and the role of neuroticism. Biological Psychology, 68 (1). pp. 61-78. ISSN 0301-0511

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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.

Item Type: Article
Journal or Publication Title: Biological Psychology
Uncontrolled Keywords: Antisaccade ; Prosaccade (reflexive saccade ; visually-guided saccade) ; Oculomotor control ; Schizotypal personality traits ; Neuroticism ; Negative emotionality ; Endophenotype ; Schizophrenia
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Departments: Faculty of Science and Technology > Psychology
ID Code: 11152
Deposited By: Dr Trevor Crawford
Deposited On: 04 Aug 2008 09:46
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 14:57
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/11152

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