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Motor control alteration in posturography in learning-disabled children.
Adrián Poblano1, Kioko Ishiwara, Ma de Lourdes Arias
1Laboratorio de Neurofisiología Cognoscitiva, Instituto de la Comunicación Humana, Centro Nacional de Rehabilitación, Mexico City, Mexico. drdyslexia@starmedia.com
Archives of Medical Research
|December 3, 2002
Summary
Children with learning disabilities (LDs) do not show deficits in sensory integration for posture control. However, their motor control exhibits delayed responses during large translations, indicating potential timing and coordination issues.
Area of Science:
- Neuroscience
- Developmental Psychology
- Biomechanics
Background:
- Previous research suggests impaired intersensory integration and motor control in children with learning disabilities (LDs).
- This study investigates these hypotheses using posturographic recordings.
Purpose of the Study:
- To assess vestibular-visual-somatosensory integration for posture control in children with LDs.
- To evaluate motor control and coordination in children with LDs.
Main Methods:
- Compared 27 children with LDs to 27 controls using the Equitest platform.
- Utilized sensory organization tests varying visual, vestibular, and somatosensory cues.
- Administered movement coordination tests involving platform translations.
Main Results:
- No significant differences in sensory organization or visual preference between groups.
- Children with LDs showed significantly higher latencies in motor control during large translations.
- No correlation found between academic performance and posturographic measures.
Conclusions:
- Postural control via vestibular-visual-somatosensory systems appears normal in children with LDs.
- Motor control, specifically rate and timing precision, may be impaired in children with LDs during dynamic movements.