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Related Experiment Video

Updated: Sep 6, 2025

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Relating Suprathreshold Auditory Processing Abilities to Speech Understanding in Competition.

Frederick J Gallun1,2, Laura Coco1,2, Tess K Koerner1,2

  • 1Oregon Hearing Research Center, Oregon Health & Science University, Portland, OR 97239, USA.

Brain Sciences
|June 24, 2022
PubMed
Summary
This summary is machine-generated.

Older adults often struggle with hearing in noise, even with normal hearing. This study found that while some auditory processing abilities and age play a role, they don't fully explain speech understanding difficulties in noisy environments.

Keywords:
agingauditory processinghearing lossspeech perception

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Area of Science:

  • Audiology
  • Neuroscience
  • Gerontology

Background:

  • Difficulty hearing in noise is a common issue for older adults, often exceeding what's predicted by audiometric hearing loss alone.
  • Beyond basic hearing detection, the ability to process auditory information (suprathreshold abilities) may significantly impact speech understanding in complex acoustic environments.
  • Understanding these factors is crucial for developing effective interventions for age-related hearing impairments.

Purpose of the Study:

  • To investigate the relationship between specific suprathreshold auditory processing abilities and speech understanding in noise among older adults.
  • To assess the utility of the Portable Automated Rapid Testing (PART) application for psychoacoustic evaluations.
  • To determine the predictive power of auditory processing, age, and pure-tone average on speech perception in challenging listening conditions.

Main Methods:

  • Forty-one participants (average age 51) completed assessments of temporal fine structure (TFS) and spectrotemporal modulation (STM) detection using the PART application on an iPad.
  • Speech understanding was evaluated in noise, with and without spatial separation between target and masker speech.
  • Statistical models analyzed the association between auditory processing performance, age, pure-tone average (PTA), and speech perception outcomes.

Main Results:

  • The best-fit statistical model included age and diotic frequency modulation (FM) detection sensitivity, but not other tested suprathreshold abilities.
  • Even the most successful models explained only 31% or less of the variance in speech understanding.
  • This suggests that cognitive factors likely play a substantial role in speech perception in noise, beyond auditory processing.

Conclusions:

  • Suprathreshold auditory processing abilities alone do not sufficiently explain speech understanding difficulties in competition for older adults.
  • Discrepancies may arise from the specific tests used (speech or auditory processing), listener characteristics, or the chosen suprathreshold measures.
  • Future research should involve larger cohorts, diverse cognitive assessments, and a broader range of suprathreshold auditory processing evaluations.