Changes in otoacoustic emissions and high-frequency hearing thresholds in children and adolescents

Time–frequency decomposition of click evoked otoacoustic emissions in children

“…However, the overall shape of the CEOAE level-frequency plot (Fig. 7) was qualitatively similar to the previously reported data in adults and 6e10 year old children (Groh et al, 2006;see their Fig. 3).…”

“…The magnitude of the OAE levels obtained in the present study cannot be directly compared to those previously published due to the differences in instrumentation, recording techniques, stimulus levels and analysis methods (Bray and Kemp, 1987;Groh et al, 2006;Norton and Widen, 1990;Prieve et al, 1997). However, the overall shape of the CEOAE level-frequency plot (Fig.…”

“…In this study, CEOAE levels in 5e10 year old children and adults were not significantly different. This finding, while in agreement with Prieve et al (1997) contradicts with another study that showed that 6e10 year old children have higher CEOAE levels compared to adults (Groh et al, 2006). This disagreement could be due to the differences in the click sound pressure level used to evoke OAEs.…”

“…This disagreement could be due to the differences in the click sound pressure level used to evoke OAEs. Groh et al (2006) used a high click level (80 dB peSPL) to evoke OAEs. Their results reflect group differences at higher click levels, where the CEOAE transfer-function magnitudes generally decrease and may signify aspects of the compressive nonlinear growth in emission levels (Kalluri and Shera, 2007).…”

Função coclear em frequências ultra-altas em pais de indivíduos com deficiência auditiva autossômica recessiva

“…Para Middlesworth (2012) Para a população em geral, a deterioração da audição nas frequências ultra-altas já começa na infância, sendo acompanhada por uma diminuição nas respostas das EOA-T e EOA-PD, bem como ausência das emissões otoacústicas espontâneas (Groh et al, 2006). Assim, a avaliação das frequências ultra-altas pode ajudar a detectar a DA de forma precoce, a qual não pode ser revelada por meio da avaliação audiológica convencional.…”