Speech-evoked brainstem response in normal adolescent and children speakers of Brazilian Portuguese

This study aimed to analyze the coding responses of speech sounds (syllable/da/) in children and adolescent speakers of Brazilian Portuguese with typical development and normal hearing, aged between 8 and 16 years, in order to establish normative data of speech ABR response. This normative data can...
Ausführliche Beschreibung

This study aimed to analyze the coding responses of speech sounds (syllable/da/) in children and adolescent speakers of Brazilian Portuguese with typical development and normal hearing, aged between 8 and 16 years, in order to establish normative data of speech ABR response. This normative data can be used as a reference for speech ABR responses and also to enable the diagnosis in individuals with different pathologies. The analyze for absolute latency of speech sounds, more specifically the syllable/da/, for speech-ABR in children and adolescent speakers of Brazilian Portuguese with typical development were: right ear - wave V (6,43–6,57), wave A (7,35–7,57), wave C (18,19–18,46), wave D (21,99–22,42), wave E (30,73–31,05), wave F (39,19–39,55) and wave O (47,75–48,24) and left ear - wave V (6,44–6,57), wave A (7,36–7,59), wave C (18,26–18,55), wave D (22,22 -22,50), wave E (30,58–30,97), wave F (39,05–39,35) and wave O (47,78–48,13). For the amplitude values (μv), the responses were within the following ranges: right ear - wave V (0,10–0,14), wave A (0,19–0,25), wave C (0,08–0,13), wave D (0,11–0,17), wave E (0,17–0,42), wave F (0,14–0,33) and wave O (0,11–0,31) and left ear - wave V (0,09–0,13), wave A (0,08–0,23), wave C (0,08–0,14), wave D (0,10–0,15), wave E (0,20–0,26), wave F (0,16–0,22) and wave O (0,12–0,20). For the values of complex VA (slope: μv/ms and area μv x ms) the follow values obtained were: right ear – slope (0,32–0,42) and area (0,29–0,38) and left ear – slope (0,30–0,39) and area (0,27–0,35). Ausführliche Beschreibung