Arquivos de neuro-psiquiatria · 2013
Right cerebral hemisphere and central auditory processing in children with developmental dyslexia.
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Murphy-Ruiz Paulina C, Peñaloza-López Yolanda R, García-Pedroza Felipe, Poblano Adrián
Аннотация
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.
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.