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Functional brain alterations following mild-to-moderate sensorineural hearing loss in children

par Calcus, Axelle ;Tuomainen, Outi;Campos, Ana Carolina Scanavachi Moreira A.C.S.M.;Rosen, Stuart;Halliday, Lorna
Référence eLife, 8
Publication Publié, 2019-10-01

Article révisé par les pairs

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Résumé :

Auditory deprivation in the form of deafness during development leads to lasting changes in central auditory system function. However, less is known about the effects of mild-to-moderate sensorineural hearing loss (MMHL) during development. Here, we used a longitudinal design to examine late auditory evoked responses and mismatch responses to nonspeech and speech sounds for children with MMHL. At Time 1, younger children with MMHL (8–12 years; n = 23) showed age-appropriate mismatch negativities (MMNs) to sounds, but older children (12–16 years; n = 23) did not. Six years later, we re-tested a subset of the younger (now older) children with MMHL (n = 13). Children who had shown significant MMNs at Time 1 showed MMNs that were reduced and, for nonspeech, absent at Time 2. Our findings demonstrate that even a mild-to-moderate hearing loss during early-to-mid childhood can lead to changes in the neural processing of sounds in late childhood/adolescence.