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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 |
| UTAS Author: | Slaghuis, WL (Dr Walter Slaghuis) |
| UTAS Author: | Bowling, AC (Dr Alison Bowling) |
| UTAS Author: | French, RL (Miss Rebecca Lea French) |
| ID Code: | 36410 |
| Year Published: | 2005 |
| Web of Science® Times Cited: | 15 |
| Deposited By: | Psychology |
| Deposited On: | 2005-08-01 |
| Last Modified: | 2007-11-08 |
| Downloads: | 0 |
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