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Acoustic reflex thresholds in young and elderly subjects with normal hearing
The Journal of the Acoustical Society of America
|January 1, 1981
Summary
Elderly individuals show elevated acoustic reflex thresholds for broadband noise but not for tonal stimuli, confirming previous research. This finding is crucial for understanding age-related auditory changes.
Area of Science:
- Audiology
- Gerontology
- Acoustics
Background:
- Age-related hearing loss can affect auditory processing.
- The acoustic reflex is a protective mechanism that can be influenced by age.
Purpose of the Study:
- To replicate and refine Silman's 1979 experiment on acoustic reflex thresholds.
- To investigate age-related differences in acoustic reflex thresholds in normal-hearing young and elderly adults.
Main Methods:
- Modified Silman's (1979a) experimental criteria for normal hearing up to 8000 Hz.
- Matched auditory thresholds between young and elderly participants.
- Measured acoustic reflex thresholds (ART) using broadband noise and tonal activators.
Main Results:
- Confirmed Silman's findings of elevated ART in elderly subjects for broadband noise.
- Observed no significant difference in ART for tonal activators between age groups.
- Demonstrated age-related changes in the acoustic reflex response to different sound types.
Conclusions:
- Elderly individuals exhibit altered acoustic reflex responses, particularly to broadband noise.
- The acoustic reflex may be differentially affected by age depending on the stimulus characteristics.
- Findings contribute to understanding auditory system changes associated with aging.