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A Method for Tracking the Time Evolution of Steady-State Evoked Potentials
Published on: May 25, 2019
[Auditory steady-state response in the auditory evaluation: clinical application].
Josilene Luciene Duarte1, Kátia de Freitas Alvarenga, Tatiana Manfrini Garcia
1Departamento de Fonoaudiologia, Faculdade de Odontologia de Bauru, Universidade de São Paulo. josileneduarte@uol.com.br
Pro-Fono : Revista De Atualizacao Cientifica
|July 16, 2008
Summary
The Auditory Steady State Response (ASSR) effectively estimates pure-tone audiometry thresholds across various frequencies, particularly for severe hearing loss. However, it should complement, not replace, behavioral auditory assessments.
Area of Science:
- Electrophysiology
- Audiology
- Neuroscience
Context:
- Auditory Steady State Response (ASSR) is an electrophysiological test for hearing thresholds.
- ASSR offers efficient bilateral ear assessment across multiple frequencies.
- It can test hearing up to 125dB HL, characterizing residual hearing.
Purpose:
- To assess the utility of ASSR in determining hearing thresholds for sensorineural hearing loss.
- To compare ASSR results with Pure Tone Audiometry (PTA) across different hearing loss levels.
Summary:
- 48 participants (7-30 years) with varying hearing loss underwent both PTA and ASSR at 0.5, 1, 2, and 4 kHz.
- ASSR utilized modulated and dicotic stimulation for mild/moderate loss, and simple stimulation for others.
- Significant correlation (p<0.01) was found between PTA and ASSR thresholds, especially in severe cases, though ASSR sometimes overestimated loss.
Impact:
- ASSR serves as a valuable complementary tool for estimating PTA thresholds.
- Findings support ASSR's role in audiological assessments, particularly for individuals with hearing impairments.
- This research aids in refining diagnostic protocols for hearing loss evaluation.
