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Smooth-pursuit eye movement and directional motion-contrast sensitivity in schizophrenia

Citation

Slaghuis, WL and Bowling, AC and French, RL, Smooth-pursuit eye movement and directional motion-contrast sensitivity in schizophrenia, Experimental Brain Research, 166, (1) pp. 89-101. ISSN 0014-4819 (2005) [Refereed Article]

DOI: doi:10.1007/s00221-005-2347-1

Abstract

Although the occurrence of visual processing and eye-movement disorders in schizophrenia have been widely recognized, their relationship with the symptoms of schizophrenia is less well understood. In two experiments the relationship between directional-motion processing and smooth-pursuit eye movement was investigated in normal observers and in groups with positive and negative symptoms in schizophrenia. The first experiment measured linear smooth-pursuit eye movement at six target velocities from 5.0 to 30.0°s -1 and the second experiment measured directional motion-contrast sensitivity at three spatial (1.0, 4.0 and 8.0 c/deg) and five temporal (0.75, 3.0, 6.0, 12.0 and 18.0 Hz) frequencies in the same groups of observers. No significant differences were found between the control and positive-symptom group in directional motion-contrast sensitivity and smooth-pursuit eye movements. In comparison, a relationship was found between a significant reduction in directional motion-contrast sensitivity and significantly reduced smooth-pursuit eye movement in the negative-symptom group and serves to further cleave the distinction between positive and negative symptoms in schizophrenia. The relationship between visual motion processing and pursuit eye movement in the negative-symptom group was explained by a disorder in directional motion processing that fails to fully engage the pursuit eye movement system and reduces smooth pursuit eye-velocity gain. © Springer-Verlag 2005.

Item Details

Item Type:Refereed Article
Research Division:Psychology and Cognitive Sciences
Research Group:Psychology
Research Field:Health, Clinical and Counselling Psychology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Philosophy and Religious Studies
Author:Slaghuis, WL (Dr Walter Slaghuis)
Author:Bowling, AC (Dr Alison Bowling)
Author:French, RL (Miss Rebecca Lea French)
ID Code:36410
Year Published:2005
Web of Science® Times Cited:14
Deposited By:Psychology
Deposited On:2005-08-01
Last Modified:2007-11-08
Downloads:0

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