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Visually guided eye movements reduce postural sway in dyslexic children.
José A Barela1, Newton Tesima2, Vitor da Silva Amaral2
1Institute of Biosciences, São Paulo State University, Rio Claro, SP, Brazil.
Neuroscience Letters
|March 8, 2020
Summary
Dyslexic children have poorer postural control, but guided eye movements improve it for both dyslexic and non-dyslexic children. Eye movement patterns are similar between groups and do not explain postural control differences.
Area of Science:
- Neuroscience
- Developmental Psychology
- Biomechanics
Background:
- Children with dyslexia exhibit deficits in postural control compared to their peers.
- Guided eye movements are known to improve postural control in adults, but their effect on dyslexic children is unstudied.
- Investigating the role of visual search during eye movements in dyslexic children's postural control is crucial.
Purpose of the Study:
- To examine how guided eye movements and their patterns influence postural control in dyslexic children during quiet stance.
- To compare postural control and eye movement strategies between dyslexic and non-dyslexic children under different visual conditions.
Main Methods:
- Twelve dyslexic and 12 non-dyslexic children maintained upright quiet stance for 60 seconds.
- Conditions included visual fixation on a target and guided eye movements following a moving target.
- Body sway was measured using motion capture (IRED), and eye movements were tracked with eye-tracking glasses.
Main Results:
- Dyslexic children showed greater body sway than non-dyslexic children in both fixation and guided conditions.
- Both groups demonstrated reduced postural sway during guided eye movements compared to fixation.
- Eye movement modulation was similar between dyslexic and non-dyslexic children, indicating similar visual processing capabilities.
Conclusions:
- Dyslexic children can utilize visual information during guided eye movements to enhance postural control, despite overall poorer performance.
- Eye movement patterns do not appear to be the primary factor contributing to the postural control deficits observed in dyslexic children.
- Interventions involving guided visual attention may benefit postural control in dyslexic children, though performance may not reach neurotypical levels.
