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Related Experiment Video

Updated: Dec 12, 2025

Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
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Published on: January 25, 2016

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[Hidden hearing loss and early identification].

Lihui Huang

    Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Journal of Clinical Otorhinolaryngology Head and Neck Surgery
    |August 14, 2020
    PubMed
    Summary

    Hidden hearing loss (HHL) presents subtle auditory function defects linked to noise, aging, or drugs. Early detection involves advanced tests like ultra-high frequency audiometry and auditory brainstem response.

    Area of Science:

    • Audiology
    • Neuroscience
    • Otolaryngology

    Background:

    • Hidden hearing loss (HHL) is characterized by impaired auditory function above typical hearing thresholds.
    • Potential contributing factors include noise exposure, aging, and ototoxic drug damage, though their precise role in cochlear synaptic damage is unclear.
    • Clinical signs include normal pure-tone audiometry (PTA) and auditory brainstem response (ABR) thresholds, but reduced amplitude of ABR wave I or electrocochleography (ECochG) at higher intensities, and poor speech recognition in noise.

    Purpose of the Study:

    • To investigate the clinical audiological characteristics of hidden hearing loss.
    • To explore methods for early detection of HHL.

    Main Methods:

    • Utilized ultra-high frequency pure tone audiometry.
    Keywords:
    agingdrug damagehidden hearing lossnoise exposure

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  • Conducted objective audiological examinations including auditory brainstem response (ABR), electrocochleography (ECochG), and frequency-following response.
  • Performed speech audiometry in noise and evaluated noise exposure through questionnaires.

    • Main Results:

    • Identified characteristic audiological findings in HHL, such as normal PTA and ABR thresholds.
    • Observed reduced amplitude of ABR wave I or ECochG at medium and high stimulation intensities.
    • Noted decreased speech recognition ability in noisy environments.

    Conclusions:

    • Early detection of HHL is feasible using a combination of advanced audiological tests.
    • These methods can identify subtle auditory deficits not apparent with standard hearing tests.
    • Further research is needed to elucidate the mechanisms linking noise, aging, and drugs to synaptic damage in HHL.