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[Auditory evoked potentials: basics and clinical applications]
A Radeloff1, M Cebulla1, W Shehata-Dieler1
1Comprehensive Hearing Center, Klinik und Poliklinik für Hals-, Nasen- und Ohrenkrankheiten, plastische und ästhetische Operationen der Julius-Maximilians-Universität Würzburg.
Laryngo- Rhino- Otologie
|August 26, 2014
Summary
Auditory evoked potentials (AEPs) help diagnose hearing disorders like auditory neuropathy spectrum disorder (ANSD). Early AEPs, or auditory brainstem responses (ABR), are crucial for newborn hearing screening.
Area of Science:
- Neuroscience
- Audiology
- Medical Technology
Context:
- Auditory evoked potentials (AEPs) reflect auditory system activity after sound stimulation.
- Electrocochleography records inner ear AEPs invasively or non-invasively.
- Central auditory pathway AEPs are classified by latency: early, middle, and late (cortical).
Purpose:
- To detail the clinical applications and techniques of auditory evoked potentials (AEPs).
- To highlight the diagnostic utility of electrocochleography for auditory neuropathy spectrum disorder (ANSD) and endolymphatic hydrops.
- To emphasize the role of early AEPs (auditory brainstem responses, ABR) in newborn hearing screening.
Summary:
- AEPs are recorded at different auditory system levels; electrocochleography focuses on the inner ear.
- Central AEPs, including auditory brainstem responses (ABR), are surface-recorded and require unmasking from EEG.
- Early AEPs (ABR) are vital for diagnosing ANSD and are preferred for newborn hearing screening over otoacoustic emissions.
Impact:
- Provides a comprehensive overview of AEPs for diagnosing auditory disorders.
- Establishes ABR as a key tool for early detection of hearing impairments in newborns.
- Informs clinical practice and research in audiology and neuroscience.
