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Effects of Noise Exposure on Peripheral Auditory Function, Binaural Envelope Coding, and Speech Perception in Student
Chhayakanta Patro1, Aviya Singer1,2, Angela Monfiletto1
1Department of Speech Language Pathology & Audiology, Towson University, Towson, Maryland, USA.
Ear and Hearing
|December 20, 2024
Summary
Young musicians show subtle neural deficits from noise exposure, impacting hearing. Extended high-frequency (EHF) hearing loss affects speech perception in complex environments for all individuals.
Area of Science:
- Auditory Neuroscience
- Occupational Hearing Health
Background:
- Musicians experience heightened risk of noise-induced hearing loss.
- Early detection of subclinical hearing damage is crucial, as traditional tests may miss subtle changes.
Purpose of the Study:
- To investigate the effects of noise exposure on electrophysiological and perceptual aspects of hearing in young musicians with normal audiometric thresholds.
Main Methods:
- Compared 33 musicians and 33 nonmusicians (ages 21-35) with normal audiometry.
- Utilized extended high-frequency (EHF) audiometry, auditory brainstem responses (ABRs), and speech perception tests including spatial release from masking (SRM).
Main Results:
- Musicians reported higher lifetime noise exposure.
- ABR revealed diminished neural signal growth in musicians.
- Student musicians showed enhanced binaural processing, but no difference in SRM compared to nonmusicians.
Conclusions:
- Musicians exhibit peripheral neural deficits, but these are not clearly linked to perceptual skills.
- Reduced EHF hearing thresholds correlate with impaired SRM, affecting speech intelligibility in noise for everyone.
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