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Right cerebral hemisphere and central auditory processing in children with developmental dyslexia
Paulina C Murphy-Ruiz1, Yolanda R Peñaloza-López2, Felipe García-Pedroza3
1Department of Audiology and Communication Disorders, National Institute of Rehabilitation, México, Mexico City.
Arquivos De Neuro-Psiquiatria
|January 8, 2014
Summary
Children with developmental dyslexia (DD) exhibit impaired right hemisphere auditory processing. Specific tests reveal deficits in central auditory processing (CAP) abilities, highlighting the right hemisphere's role in DD.
Area of Science:
- Neuroscience
- Developmental Psychology
- Audiology
Background:
- Developmental dyslexia (DD) is a common learning disorder.
- Auditory processing is crucial for language acquisition and reading.
- The role of the right hemisphere in DD-related auditory processing deficits is not fully understood.
Purpose of the Study:
- To investigate alterations in right hemisphere auditory processing abilities in children with developmental dyslexia (DD).
- To determine if specific central auditory processing (CAP) tests can detect auditory dysfunction in children with DD.
Main Methods:
- An analytical comparative cross-sectional study was conducted.
- Twenty right-handed children with DD and 20 healthy right-handed control subjects (CS) were recruited.
- CAP tests assessed frequency patterns, sound duration, music pitch recognition, and environmental sound identification, focusing on right hemisphere function.
Main Results:
- Children with DD demonstrated significantly lower performance across all CAP subtests compared to control subjects.
- These deficits were observed even in CAP subtests preferentially engaging the right cerebral hemisphere.
Conclusions:
- The findings suggest a significant contribution of the right hemisphere to central auditory processing (CAP) alterations in children with developmental dyslexia (DD).
- Right hemisphere CAP should be considered in the assessment and rehabilitation strategies for children with DD.
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