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Gaze strategies during planning in first-episode psychosis

Huddy, VC; Hodgson, TL; Kapasi, M; Mutsatsa, SH; Harrison, I; Bames, TRE; Joyce, EM; (2007) Gaze strategies during planning in first-episode psychosis. J ABNORM PSYCHOL , 116 (3) 589 - 598. 10.1037/0021-843X.116.3.589.

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Abstract

Eye movements were measured during the performance of a computerized Tower of London task to specify the source of planning abnormalities in patients with 1st-episode schizophrenia or schizoaffective disorder. Subjects viewed 2 arrays of colored balls in the upper and lower parts of the screen. They were asked to plan the shortest sequence of moves required to rearrange the balls in the lower screen to match the upper arrangement. Compared with healthy controls, patients made more planning errors,. and decision times were longer. However, the patients showed the same gaze biases as controls prior to making a response, indicating that they understood the requirements of the task, approached the task in a strategic manner by identifying the nature of the problem, and used appropriate fixation strategies to plan and elaborate solutions. The patients showed increased duration of long-gaze periods toward both parts of the screen. This suggests that the patients had difficulty in encoding the essential features of the stimulus array. This finding is compatible with slowing of working memory consolidation.

Type: Article
Title: Gaze strategies during planning in first-episode psychosis
DOI: 10.1037/0021-843X.116.3.589
Keywords: schizophrenia, eye movements, Tower of London planning task, cognitive impairments, working memory, SPATIAL WORKING-MEMORY, EYE-MOVEMENTS, PARKINSONS-DISEASE, CHRONIC-SCHIZOPHRENIA, COGNITIVE DEFICITS, PREFRONTAL CORTEX, VISUAL-SEARCH, PERFORMANCE, DOPAMINE, IMPAIRMENTS
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Clinical, Edu and Hlth Psychology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Division of Psychiatry
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Clinical and Movement Neurosciences
URI: http://discovery.ucl.ac.uk/id/eprint/98631
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