[High-resolution distortion-product otoacoustic emissions: method and clinical applications]

Area of Science:

• Auditory Neuroscience
• Otoacoustic Emissions
• Audiology

Context:

• Distortion-product otoacoustic emissions (DPOAEs) reflect cochlear amplifier function.
• Standard audiometry assesses broader auditory processing.
• High-resolution DPOAEs provide detailed cochlear insights.

Purpose:

• To review the methodology and applications of high-resolution DPOAE measurements.
• To highlight the limitations of standard DPOAEs in detecting early cochlear damage.
• To advocate for the clinical integration of high-resolution DPOAEs.

Summary:

• High-resolution DPOAEs offer superior sensitivity to early cochlear damage compared to standard DPOAEs.
• Standard DPOAEs with coarse frequency resolution may overlook localized sensory cell damage.
• Early detection of damage from noise exposure or ototoxic drugs is crucial.

Impact:

• Enables earlier diagnosis of hearing loss.
• Facilitates targeted therapeutic interventions for cochlear dysfunction.
• Improves the assessment of ototoxicity and noise-induced hearing damage.