Influence of Global Motion Perception on Reading
Keywords:
Magnocellular System, Learning, Child Vision, Eye MovementsAbstract
Purpose: To determine the association between global motion perception and reading speed in healthy children aged 7 to 9 years.
Methods: A total of 26 participants were included, of whom 57.7% were female. Subjects with normal binocular vision and a decimal visual acuity greater than 0.90 for near vision were included. Participants with a diagnosis of dyslexia were excluded. The study was conducted by the same professional, in the same school where the patients were located, on an individualized basis, with an approximate duration of 30 minutes per patient.
Results: The results showed that global motion perception was correlated with reading speed, mainly when motion sensitivity was measured with a high number of coherent points (40%). However, reading speed was also associated with poor visual discrimination and the efficiency of saccadic movements necessary for reading. Additionally, the greater the coherence of points, the greater the correlation with visual discrimination and the deficiency of saccadic movements.
Conclusions: Our findings support the hypothesis that global motion perception, although to a lesser extent than visual discrimination, is associated with reading speed.
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