The effects of age on hearing and middle ear function

Area of Science:

• Audiology and Gerontology
• Hearing Science
• Acoustics

Background:

• Age-related hearing loss (presbycusis) is a common sensory impairment.
• Understanding generational hearing norms is crucial for audiological assessment.
• Middle ear function changes with age require detailed investigation.

Purpose of the Study:

• To establish normative audiometric data across adult generations.
• To compare self-perceived hearing difficulty with objective measures.
• To evaluate age-related changes in middle ear function.

Main Methods:

• Audiometric testing (pure-tone thresholds) on 933 participants aged 40-79.
• Analysis of self-perceived hearing difficulty.
• Multifrequency tympanometry for middle ear evaluation.

Main Results:

• Significant decline in pure-tone thresholds with age, especially at high frequencies, noted in both genders.
• Discrepancy observed between subjective hearing complaints and objective audiometric accuracy in the elderly.
• Middle ear function variables (admittance, peak pressure, resonance frequency) showed no systematic aging trend.

Conclusions:

• Audiometric thresholds demonstrate clear age-related deterioration across adult generations.
• Self-assessment of hearing can be unreliable in older populations.
• Current middle ear measures provide generational reference values rather than indicating aging changes.