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Objective To evaluate the utility of auditory steady-state responses (ASSRs) to narrow-band chirps (NB-chirps) for estimating hearing levels in children. Design Thresholds from the NB-chirp ASSR were evaluated in 30 sedated children with normal hearing or hearing loss. The correlation between the NB-chirp ASSR and pure-tone audiometry (PTA) thresholds was analyzed, and the difference score (DS) between these thresholds was calculated. Data from the NB-chirp ASSR were compared to retrospective data from conventional ASSR to exponentially amplitude-modulated tones in 25 sedated children. Results Positive correlations between the NB-chirp ASSR and PTA thresholds were found at 500, 1000, 2000, and 4000 Hz. Multiple comparisons of the DSs for the NB-chirp ASSR and PTA revealed significant differences at 500–2000 Hz and 4000 Hz, as well as 1000–2000 Hz and 4000 Hz. Comparisons of the DSs demonstrated that the DS of the NB-chirp ASSR was significantly smaller than that of the conventional ASSR at 2000 Hz. Furthermore, the testing times for the NB-chirp ASSR were significantly shorter than those for the conventional ASSR. Conclusion The NB-chirp ASSR closely reflected the PTA thresholds, and the testing time was shorter than that of the conventional ASSR. Thus, this study demonstrated that the NB-chirp ASSR is useful for hearing threshold estimation in children.

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Research Article
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S. Karger AG, Basel
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2024
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