Brainstem evoked response audiometry in normal hearing subjects

Introduction Auditory processing refers to the efficiency and effectiveness with which the central auditory nervous system uses auditory information. Middle- and long-latency auditory evoked potentials are objective electrophysiological tests that can complement the diagnosis of alterations involving central auditory processing. Objective To standardize latency and amplitude values for short-, middle-, and long-latency auditory evoked potentials in adults with normal hearing thresholds. Methods This is a cross-sectional study. Thirty-three adults with normal hearing thresholds, without hearing complaints, and with normal central auditory processing were evaluated. All underwent basic audiological evaluation, central auditory processing assessment, and short-, middle-, and long-latency auditory evoked potentials. Results Absolute latency and interpeak values for middle- and long-latency auditory evoked potentials were lower than internationally suggested. However, for the brainstem auditory evoked potential, the means were within the range considered as normal, as suggested in the equipment. Conclusion The present study provided measurements of normal latencies and amplitudes for short-, middle-, and long-latency auditory evoked potentials in adults.

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Latency and Interpeak Interval Values of Auditory Brainstem Response in 73 Individuals with Normal Hearing

Sanfins

Colella-Santos

Ferrazoli

et al. 2022

Med Sci Monit

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Background Auditory brainstem response (ABR) potential is important for audiological diagnosis, reflecting the integrity of the structures of the auditory system up to the brainstem. The click stimulus is the best known and is most used in clinical practice. However, different devices and examiners may yield distinct results, and each institution tends to use its own parameters. We aimed to analyze the latency values of wave I, III, V, and interpeak intervals I–III, III–V, I–V values obtained in assessing ABR using a new device. Material/Methods We performed a cross-sectional study of 73 participants with normal hearing thresholds and no hearing problems. All underwent basic audiological (air and bone conduction, Speech Recognition Threshold, Speech Recognition Index, acoustic reflex, and tympanometry) and electrophysiological evaluation (ABR assessment). Results Absolute latency and interpeak values from ABR showed earlier responses in women, faster than international standards suggest. The responses were similar to other studies carried out previously, with the exception of wave I values, which were a little earlier in females. Conclusions We assessed normative data from measurement of latency values of wave I, III, V, and interpeak intervals I–III, III–V, and I–V applying 2 standard deviations in the assessment of ABR using the new Neuro-Audio/ABR device created by Neurosoft.

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Brainstem evoked response audiometry in normal hearing subjects

Cited by 9 publications

References 11 publications

Intensive care unit: results of the Newborn Hearing Screening

Intensive care unit: results of the Newborn Hearing Screening

Standardization of Latency and Amplitude Values of Short, Middle and Long Latency Auditory Evoked Potentials in Adults

Latency and Interpeak Interval Values of Auditory Brainstem Response in 73 Individuals with Normal Hearing

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