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CoDAS

On-line version ISSN 2317-1782

Abstract

OPPITZ, Sheila Jacques; SILVA, Luize Caroline Lima da; GARCIA, Michele Vargas  and  SILVEIRA, Aron Ferreira da. High-frequency auditory thresholds in normal hearing adults. CoDAS [online]. 2018, vol.30, n.4, e20170165.  Epub July 30, 2018. ISSN 2317-1782.  https://doi.org/10.1590/2317-1782/20182017165.

Purpose

Evaluate high-frequency auditory thresholds, seeking to compare responses between the ears, to verify the correlation between hearing level and aging and analyze frequency responses in normal hearing adults.

Methods

This is a prospective, quantitative, transversal study conducted with a convenience sample. Study participants were 60 individuals aged 18 to 58 years (mean=25.82) with auditory thresholds within normality standards (250-8000 Hz) and normal results in acoustic immittance measurements. High-frequency pure-tone hearing thresholds were determined using an Interacoustics AS10HF audiometer with electrodynamic high-fidelity KOSS R/80 headphones, with thresholds expressed in dBNPS.

Results

Hearing thresholds showed an increase for the right ear with statistical significance at the 10, 11 and 14 kHz frequencies and a tendency to significance at 13 kHz. As of the 14 kHz frequency, a progressive increase directly proportional to the frequency was observed bilaterally, with the thresholds increasing proportionally to age advancement for all frequencies.

Conclusion

High-frequency auditory thresholds progressively increase proportionally to frequency and age advancement in normal hearing individuals, with higher values ​​for the right ear.

Keywords : Hearing; Adult; Auditory Threshold; Audiometry; Normal Hearing Individuals.

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