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Right cerebral hemisphere and central auditory processing in children with developmental dyslexia / El hemisferio cerebral derecho y el procesamiento auditivo central en ninos con dislexia del desarrollo
Murphy-Ruiz, Paulina C.; Penaloza-Lopez, Yolanda R.; Garcia-Pedroza, Felipe; Poblano, Adrian.
  • Murphy-Ruiz, Paulina C.; National Institute of Rehabilitation. Department of Audiology and Communication Disorders. Mexico City. MX
  • Penaloza-Lopez, Yolanda R.; National Institute of Rehabilitation. Department of Audiology and Communication Disorders. Mexico City. MX
  • Garcia-Pedroza, Felipe; National Institute of Rehabilitation. Department of Audiology and Communication Disorders. Mexico City. MX
  • Poblano, Adrian; National Institute of Rehabilitation. Department of Audiology and Communication Disorders. Mexico City. MX
Arq. neuropsiquiatr ; 71(11): 883-889, 1jan. 2013. tab
Article in English | LILACS | ID: lil-691306
ABSTRACT
Objective We hypothesized that if the right hemisphere auditory processing abilities can be altered in children with developmental dyslexia (DD), we can detect dysfunction using specific tests. Method We performed an analytical comparative cross-sectional study. We studied 20 right-handed children with DD and 20 healthy right-handed control subjects (CS). Children in both groups were age, gender, and school-grade matched. Focusing on the right hemisphere’s contribution, we utilized tests to measure alterations in central auditory processing (CAP), such as determination of frequency patterns; sound duration; music pitch recognition; and identification of environmental sounds. We compared results among the two groups. Results Children with DD showed lower performance than CS in all CAP subtests, including those that preferentially engaged the cerebral right hemisphere. Conclusion Our data suggests a significant contribution of the right hemisphere in alterations of CAP in children with DD. Thus, right hemisphere CAP must be considered for examination and rehabilitation of children with DD. .
RESUMEN
Objectivo Examinamos si las habilidades del procesamiento auditivo central (PAC) del hemisferio derecho se encuentran alteradas en niños con dislexia del desarrollo (DD), por medio de pruebas específicas. Método Realizamos un estudio comparativo transversal. Estudiamos 20 niños diestros con DD y 20 niños controles (C) sanos. Los niños de ambos grupos fueron pareados por edad, género y grado escolar. Utilizamos varias pruebas para medir alteraciones del PAC, tales como determinación de patrones de frecuencia; duración del sonido; reconocimiento de tono musical e identificación de sonidos ambientales, enfatizando la contribución del hemisferio derecho. Comparamos los resultados entre los niños con DD y C. Resultados Los niños con DD mostraron menores puntuaciones que los C en todas las subpruebas del PAC, incluyendo aquellas que involucran preferencialmente al hemisferio cerebral derecho. Conclusión Los datos obtenidos sugieren una contribución significativa del hemisferio derecho para producir alteraciones del PAC en niños con DD. Por lo tanto, las PAC que involucran al hemisferio derecho deben ser consideradas en la evaluación y rehabilitación de niño s con DD. .
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Dyslexia / Cerebrum / Language Development Disorders Type of study: Observational study / Prevalence study / Risk factors Limits: Child / Female / Humans / Male Language: English Journal: Arq. neuropsiquiatr Journal subject: Neurology / Psychiatry Year: 2013 Type: Article Affiliation country: Mexico Institution/Affiliation country: National Institute of Rehabilitation/MX

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Full text: Available Index: LILACS (Americas) Main subject: Dyslexia / Cerebrum / Language Development Disorders Type of study: Observational study / Prevalence study / Risk factors Limits: Child / Female / Humans / Male Language: English Journal: Arq. neuropsiquiatr Journal subject: Neurology / Psychiatry Year: 2013 Type: Article Affiliation country: Mexico Institution/Affiliation country: National Institute of Rehabilitation/MX