Potencial Cognitivo Auditivo e vectoeletronistagmografia em escolares com dislexia e distúrbios de aprendizagem

• Ano de defesa: 2015
• Autor(a) principal: Stenico, Mariana Banzato [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Dislexia; Disturbios da aprendizagem; Criança; Dyslexia
• Link de acesso: http://hdl.handle.net/11449/124377; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/25-06-2015/000838900.pdf

Individuals with reading and writing changes may have visual, hearing and vestibular disorders as well as delayed development of perceptual functions. Both auditory and visual systems can be assessed through auditory electrophysiological tests- cognitive potentials, and visual-vectoelectronystagmography and are useful in assessing children with learning disorders. Objectives: To describe and to compare the results of auditory evoked potentials (N1, P2, N2 and P3) between GI, GII and GIII groups; to describe and to compare the results of ocular evidence between GI, GII and GIII. Method: participants were 28 students, of both genders between 8-11 years of age (mean age 9.5 years), from 3rd to 5th grades of public schools in Marília-SP. These children were divided into three groups: Group I (GI): 10 dyslexic students; Group II (GII): 9 students with learning disabilities; Group III (GIII): 9 students with no learning disorders. Auditory evoked potential assessment (oddball paradigm - frequency and duration discrimination) and visual assessment through vectoelectronystagmography were performed. Data were analyzed using descriptive statistics of mean, standard deviation, minimum and maximum. Next, a comparative analysis between the groups with F-Test ANOVA was carried out. Results: In the auditory cognitive potential test, the group with dyslexia showed shorter latencies and smaller amplitudes in P2 and P3 - frequency and P3 - duration; the group with learning disorders presented longer latencies and lower amplitudes in N2 and P3 - frequency and P3 - duration. In visual assessment - vectoelectronystagmography, a comparison of saccadic movements, optokinetic nystagmus and pendular tracking showed that in the groups with dyslexic and learning disorder students, the movement is slower in the left eye. Conclusion: there was difference between the auditory cognitive and visual measures between control, dyslexic and learning disorders groups; this...