title: Temporal auditory processing: correlation with developmental dyslexia and cortical malformation.
abstract: BACKGROUND
  Temporal auditory processing and developmental dyslexia.
  
  
  OBJECTIVE
  To characterize the temporal auditory processing in children with developmental dyslexia and to correlate findings with cortical malformations.
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Departamento de Neurologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas. miboscariol@yahoo.com.br
authors.forename: Mirela
authors.initials: M
authors.lastname: Boscariol
authors.forename: Catarina Abraão
authors.initials: CA
authors.lastname: Guimarães
authors.forename: Simone Rocha de Vasconcellos
authors.initials: SR
authors.lastname: Hage
authors.forename: Fernando
authors.initials: F
authors.lastname: Cendes
authors.forename: Marilisa Mantovani
authors.initials: MM
authors.lastname: Guerreiro
mesh_terms: D000015:Abnormalities, Multiple / Q000503:physiopathology; D000293:Adolescent; D001303:Auditory Cortex / Q000503:physiopathology*; D001307:Auditory Perception / Q000502:physiology*; D016022:Case-Control Studies; D002648:Child; D004410:Dyslexia / Q000150:complications / Q000503:physiopathology*; D005260:Female; D006320:Hearing Tests; D006801:Humans; D008607:Intellectual Disability / Q000503:physiopathology; D007361:Intelligence Tests; D007806:Language Disorders / Q000209:etiology; D008297:Male; D054220:Malformations of Cortical Development / Q000503:physiopathology*; D009483:Neuropsychological Tests; D017678:Sex Distribution; D013997:Time Factors