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[Auditory brainstem response in the aged and elderly].

Y C Guo1, S G Harner

  • 1Union Hospital, Fujian Medical College, Fuzhou.

Zhonghua Er Bi Yan Hou Ke Za Zhi
|January 1, 1990
PubMed
Summary
This summary is machine-generated.

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Older adults show delayed auditory brainstem responses (ABR), suggesting age-related hearing loss involves cochlear and potentially central auditory pathways. ABR symmetry aids in diagnosing hearing loss versus brainstem lesions.

Area of Science:

  • Neuroscience
  • Audiology
  • Gerontology

Context:

  • Aging is associated with sensory decline, including hearing loss (presbycusis).
  • Auditory Brainstem Response (ABR) is a neurophysiological measure assessing the auditory pathway from the cochlea to the brainstem.
  • Understanding age-related changes in ABR is crucial for diagnosing hearing impairments and neurological conditions.

Purpose:

  • To investigate age-related changes in Auditory Brainstem Response (ABR) parameters.
  • To compare ABR findings in older adults with hearing loss to a younger, normal-hearing control group.
  • To explore the diagnostic utility of ABR symmetry and sex-based differences in auditory processing.

Summary:

  • Older adults (mean age 66.4) with mild hearing loss exhibited significantly longer absolute and inter-peak latencies in ABR compared to younger controls (mean age 17.6).

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  • Results suggest age-related hearing loss stems primarily from cochlear pathology, though central auditory system involvement cannot be ruled out.
  • High symmetry in ABR parameters between ears in both groups supports its use in differentiating presbycusis from brainstem lesions. Males showed greater ABR alterations than females across age groups.

    • Impact:

    • Provides insights into the neurophysiological basis of age-related hearing loss.
    • Highlights the potential of ABR as a diagnostic tool for distinguishing peripheral from central auditory dysfunction in older individuals.
    • Identifies sex as a factor influencing auditory processing and ABR characteristics with aging.