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Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice
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Early Signs of Aging in Auditory Function Reflected in the Event-Related Potentials.

Madison Knodell1, Anne Dean1, Liz Kroger1

  • 1Department of Communication Sciences and Disorders, University of Cincinnati, Cincinnati, OH.

Journal of the American Academy of Audiology
|July 6, 2026
PubMed
Summary

Aging affects auditory processing, showing changes in brain responses even before hearing loss is apparent. Auditory event-related potentials (ERPs) reveal these early signs in both preattentive and attentive listening.

Keywords:
P300agingcortical auditory evoked potentialevent-related potentialsmismatch negativity

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Last Updated: Jul 7, 2026

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Published on: September 7, 2022

Area of Science:

  • Neuroscience
  • Auditory Neuroscience
  • Aging Research

Background:

  • Speech perception relies on integrating sensory input with cognitive processes.
  • The impact of aging on auditory sensory and cognitive functions is not fully understood.
  • Investigating age-related changes in auditory processing is crucial for understanding speech perception decline.

Purpose of the Study:

  • To investigate early effects of aging on auditory processing at preattentive and attentive levels using auditory event-related potentials (ERPs).
  • To examine changes in cortical auditory evoked potential (CAEP), mismatch negativity (MMN), and P300 with aging.
  • To correlate ERP measures with subjective hearing and cognitive function in different age groups.

Main Methods:

  • Auditory event-related potentials (ERPs) were recorded using an oddball paradigm under passive and attentive listening.
  • Participants included young (20-30 years) and upper-middle-aged (50-60 years) adults without hearing impairment.
  • Frequency discrimination (FD) test, Speech Spatial and Qualities of Hearing Scale (SSQ), and cognitive tests were administered.

Main Results:

  • Upper-middle-aged adults showed larger CAEP amplitudes and shorter latencies compared to young adults.
  • The upper-middle-aged group exhibited smaller MMN and P300 amplitudes and longer latencies.
  • Despite poorer hearing thresholds and cognitive performance, the older group's FD threshold was similar to the younger group.

Conclusions:

  • Early signs of aging impact the auditory system, detectable through preattentive and attentive ERPs.
  • ERPs offer objective measures for identifying age-related auditory function changes.
  • These findings highlight the utility of ERPs in assessing subtle, age-related auditory processing alterations.