Hutton, Samuel B. and Huddy, Vyv and Barnes, Thomas R. E. and Robbins, Trevor W. and Crawford, Trevor J. and Kennard, Christopher and Joyce, Eileen M. (2004) The relationship between antisaccades, smooth pursuit, and executive dysfunction in first-episode schizophrenia. Biological Psychiatry, 56 (8). pp. 553-559. ISSN 1873-2402Full text not available from this repository.
Background Both oculomotor and neuropsychologic deficits have been used to support the hypothesis that schizophrenia is associated with prefrontal cortex dysfunction, but studies that have specifically investigated the relationships between these deficits have produced inconsistent findings. Methods We measured both smooth pursuit and antisaccade performance in a large group (n = 109) of patients with first-episode schizophrenia and a group of matched control subjects (n = 59) and investigated the relationship between performance on these tasks and performance on a range of executive tasks. We additionally explored the relationship between these variables and measures of psychopathology at presentation and duration of untreated psychosis. Results Antisaccade errors were significantly correlated with spatial working memory performance. Smooth pursuit gain did not correlate with any neuropsychologic measure. There were no reliable correlations between either oculomotor variables and measures of psychopathology and duration of untreated psychosis. Conclusions These findings suggest that in schizophrenia working memory and antisaccade performance reflect the same abnormal prefrontal substrates and that smooth pursuit is mediated by a separate neural abnormality.
|Journal or Publication Title:||Biological Psychiatry|
|Uncontrolled Keywords:||Antisaccade ; executive function ; oculomotor ; schizophrenia ; smooth pursuit ; working memory|
|Subjects:||B Philosophy. Psychology. Religion > BF Psychology|
|Departments:||Faculty of Science and Technology > Psychology|
|Deposited By:||Mrs Karen Gerrard|
|Deposited On:||25 Jun 2008 15:43|
|Last Modified:||07 Jan 2015 12:34|
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