Temporal auditory processing: correlation with developmental dyslexia and cortical malformation.

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Mirela Boscariol, Catarina Abraão Guimarães, Simone Rocha de Vasconcellos Hage, Fernando Cendes, Marilisa Mantovani Guerreiro

Author Information

Mirela Boscariol: Departamento de Neurologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas. miboscariol@yahoo.com.br

PMID: 21271113 DOI: 10.1590/s0104-56872010000400030

BACKGROUND: Temporal auditory processing and developmental dyslexia.
AIM: To characterize the temporal auditory processing in children with developmental dyslexia and to correlate findings with Cortical malformations.
METHOD: Twenty school-aged children, ranging in age from 8 to 14 years were evaluated. These children were divided into two groups: the experimental group (EG) was composed by 11 children (eight were male) with developmental dyslexia and the control group (CG) was composed by nine normal children (six were male). After neurological assessment and verification of the intellectual level, language, reading and writing skills in order to determine the diagnosis, children underwent a peripheral audiological evaluation and Random Gap Detection Test and/or Random Gap Detection Test Expanded.
RESULTS: A statistically significant difference between children in the EG and CG were observed, with children in the EG presenting worst performances. Most of the children in the EG presented perisylvian polymicrogyria.
CONCLUSION: Children with developmental dyslexia may present temporal auditory processing disorders with deficits in phonological processing. Cortical malformations may be the anatomical substrate of these disorders.

Abnormalities, Multiple

Adolescent

Auditory Cortex

Auditory Perception

Case-Control Studies

Child

Dyslexia

Female

Hearing Tests

Humans

Intellectual Disability

Intelligence Tests

Language Disorders

Male

Malformations of Cortical Development

Neuropsychological Tests

Sex Distribution

Time Factors

Journal Article Research Support, Non-U.S. Gov't

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