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Eye movements, prematurity and developmental co-ordination disorder
T Langaas1, M Mon-Williams, J P Wann
1Department of Psychology, University of Reading, Whiteknights, UK.
Insights
Children with developmental coordination disorder and those born prematurely show reduced horizontal pursuit eye movements. This suggests eye movement analysis can indicate broader motor development deficits in children.
Area of Science:
- Neuroscience
- Developmental Psychology
- Pediatrics
Background:
- Developmental coordination disorder (DCD) affects motor skills in children.
- Premature birth can lead to various neurodevelopmental challenges.
- Eye movement control is crucial for visual processing and motor interaction.
Purpose of the Study:
- To investigate horizontal pursuit eye movements in children with DCD and those born prematurely.
- To compare the eye movement performance of these groups with typically developing children.
- To explore the relationship between eye movement deficits and general motor development.
Main Methods:
- Assessed horizontal pursuit eye movements in two groups of children (DCD and premature birth, n=8 each).
- Compared findings with a control group of typically developing children (n=32).
- Analyzed eye movement gain and temporal synchronization to evaluate tracking accuracy and predictive control.
Main Results:
- Both children with DCD and those born prematurely exhibited reduced gain in horizontal pursuit eye movements compared to controls.
- Some children demonstrated impaired temporal synchronization, indicating poor predictive control.
- These deficits were observed despite the absence of simple control system lags.
Conclusions:
- Reduced horizontal pursuit eye movements may serve as a sensitive indicator of general motor deficits in childhood.
- Eye movement abnormalities in DCD and premature populations highlight potential neurodevelopmental differences.
- Further research is warranted to understand the implications of these findings for early intervention strategies.
Abstract:
Horizontal pursuit eye movements were investigated in two separate groups of children: One group exhibited developmental co-ordination disorder (n = 8) whilst another group of children were born prematurely (n = 8). Both studies found a reduced gain in pursuit eye movements when the respective populations were compared with control groups (n = 32). A difference was also found in the ability of some children to temporally synchronize their tracking response to the stimulus, which was indicative of poor predictive control rather than lags in the control system. We suggest that horizontal eye movements may be a sensitive indicator of more general motor deficits during childhood development.