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Evoked auditory potentials with speech stimulus in children with hearing aid

Grant number: 12/18633-7
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): April 01, 2013
Effective date (End): March 31, 2016
Field of knowledge:Health Sciences - Speech Therapy
Principal researcher:Carla Gentile Matas
Grantee:Renata Aparecida Leite
Home Institution: Faculdade de Medicina (FM). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The present study aims to characterize and compare the short and long latency evoked auditory potentials in children with neurosensorial hearing loss, pre and post hearing aids adaptation. Thirty children with ages ranging from 7 to 15 years will be assessed (15 with mild to moderately severe bilateral symmetric neurosensorial hearing loss and who have no previous experience with any kind of sound amplification devices (study group), and 15 without hearing and language disorders (control group). Children from both groups will be assessed through pure-tone audiometry, acoustic immittance measures, brainstem auditory evoked potential, and long latency auditory evoked potentials (P1,N1,P2,P300). Only the children from the study group will be submitted to a speech perception assessment, considering their age and the developmental level of their auditory abilities. The speech perception assessment will be carried out using the Glendonald Auditory Screening Procedure (GASP) and a List of Disyllable Words. The study group will be reassessed after 3 and 9 months from the initial assessment. Therefore, the present study intends to verify the development of the auditory pathway in children fitted with hearing aids and, since it is a longitudinal study, it will be also possible to follow up the development of the auditory abilities as well as the plasticity of the auditory system throughout the period of hearing aids use, evaluating its effectiveness and the benefits of the sound amplification.

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