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2015, Number S1

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Rev Cubana Neurol Neurocir 2015; 5 (S1)

Speed discrimination of second order motion in spelling difficulties

Carballo RO

Language: Spanish
References: 18
Page: S15-S18
PDF size: 294.32 Kb.


ABSTRACT

Objective: To distinguish the deficits in discrimination of the velocity of moving stimuli present by children with spelling difficulties.
Methods: The motion path was considered like an important way about exploration of cerebral functions. Last year many investigations demonstrate that they can not only provide information about direction or velocity but also the binocular stability to perceive a visual scene. Children with spelling difficulties may present deficit in discrimination of the velocity of moving stimuli. They selected children with spelling difficulties of Santiago de Cuba. The sample went from 3 cases with an optic space (2) and acoustic disorders (1). The group control was constituted by 3 outstanding students of the same school with teaching results. This study employed the velocity discrimination task in order to evaluate the processing of the velocity of the motion.
Results: The data found showed difference about the errors and correct response between both groups. We founded that control group performance in a motion discrimination task was a better than cases performance. It had significantly lower standard scores to correct response in spelling difficulties group (65–85 % errors in each trials), but the controls had better performance (50–70 % correct response each trials).
Conclusions: Children with spelling difficulties present deficit in discrimination of the velocity of moving stimuli. Orthographic disorders are associated with abnormal visual discrimination of stimuli velocity with apparent movement. This investigations are useful for a better child quality of life regarding future social limitations and development. Perhaps this assessment are most useful with the study of ocular movements.


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