6533b826fe1ef96bd1284543

RESEARCH PRODUCT

Children with dyslexia reveal abnormal native language representations: Evidence from a study of mismatch negativity

subject

description

Although a deficit perceiving phonemes, as indexed by the mismatch negativity (MMN), is apparent in developmental dyslexia (DD), studies have not yet addressed whether this deficit might be a result of deficient native language speech representations. The present study examines how a native-vowel prototype and an atypical vowel are discriminated by 9-year-old children with (n 5 14) and without (n 5 12) DD. MMN was elicited in all conditions in both groups. The control group revealed enhanced MMN to the native-vowel prototype in comparison to the atypical vowel. Children with DD did not show enhanced MMN amplitude to the native-vowel prototype, suggesting impaired tuning to native language speech representations. Furthermore, higher MMN amplitudes to the native-vowel prototype correlated with more advanced reading (r 5 .47) and spelling skills (r 5 .52). Descriptors: Language/speech, Children/infants, EEG/ERP, Dyslexia, MMN, Native speech sound representations