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A Method for Tracking the Time Evolution of Steady-State Evoked Potentials
Published on: May 25, 2019
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Comparative study between pure tone audiometry and auditory steady-state responses in normal hearing subjects
Roberto Miquelino de Oliveira Beck1, Bernardo Faria Ramos1, Signe Schuster Grasel1
1Universidade de São Paulo, Faculdade de Medicina, Departamento de Otorrinolaringologia, São PauloSP, Brasil, Departamento de Otorrinolaringologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil.
Brazilian Journal of Otorhinolaryngology
|March 15, 2014
Summary
Auditory steady-state responses (ASSR) provide hearing threshold measurements comparable to traditional pure-tone audiometry in normal-hearing adults. However, ASSR should not be the sole method for hearing evaluations.
Area of Science:
- Audiology
- Neuroscience
- Otolaryngology
Background:
- Auditory steady-state responses (ASSR) offer objective, frequency-specific hearing threshold detection.
- Pure-tone audiometry is standard but can be inconclusive in certain populations.
Purpose of the Study:
- To compare pure-tone (PT) thresholds with ASSR thresholds in individuals with normal hearing.
- Evaluate the efficacy of ASSR as a diagnostic tool in comparison to established methods.
Main Methods:
- Prospective cross-sectional study involving 26 normal-hearing adults (52 ears).
- Included clinical history, otoscopy, pure-tone audiometry, immitance measurements, and ASSR testing.
- Calculated mean thresholds for both PT and ASSR at various frequencies.
Main Results:
- Mean differences between PT and ASSR thresholds ranged from 7.12 dB at 500 Hz to 9.71 dB at 4000 Hz.
- No statistically significant difference was found between the mean PT and ASSR thresholds across tested frequencies.
Conclusions:
- ASSR thresholds are comparable to pure-tone thresholds in adults with normal hearing.
- ASSR is a valuable tool but should complement, not replace, comprehensive hearing evaluations.
