Objective and automatic determination of hearing thresholds in normal hearing adult subjects





Evoked potentials; Hearing; Adult.


Objective: to verify the applicability of the auditory steady state response (ASSR) test, correlating the auditory thresholds obtained in this test with the pure tone audiometry (PTA) in those without hearing complaints. Methodology: fifteen normal hearing adults were registered. The evaluation consisted of the PTA and ASSR, both to verify the degree of hearing, the first being a behavioral measure and the second, electrophysiological. In PTA, the hearing threshold was evaluated in the frequencies of 250, 500, 1000, 2000, 3000, 4000, 6000 and 8000 Hz, in both ears. The ASSR survey was carried out in multifrequency and dichotic mode, that is, surveys with frequencies of 500, 1000, 2000 and 4000 Hz in both ears at the same time, with the aim of automatically evaluating the minimum level of specified response. Results: in PTA, the hearing thresholds were below 25 dBHL for all evaluated frequencies and the median values found were lower than the median values found in ASSR. Test Spearman, there was a significant correlation only in the frequency of 500 Hz. Conclusion: the hearing thresholds obtained by ASSR were detected in all study participants and the values were higher than those found in the ATL, however it is common for the electrophysiological results to be higher than those observed in behavioral tests. There was no correlation between the thresholds obtained between the techniques for most frequencies evaluated in normal hearing adult individuals. Thus, it is suggested to carry out future research with a larger sample size, adopting the same methodology applied in this study.


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How to Cite

POTGURSKI, D. S.; RIBEIRO, G. .; SILVA, D. P. C. da . Objective and automatic determination of hearing thresholds in normal hearing adult subjects. Research, Society and Development, [S. l.], v. 10, n. 13, p. e174101320859, 2021. DOI: 10.33448/rsd-v10i13.20859. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/20859. Acesso em: 4 dec. 2021.



Health Sciences