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Related Experiment Video

Updated: May 14, 2026

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing
04:30

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing

Published on: October 25, 2019

Age-related changes in consonant and sentence processing.

David L Woods1, Zoe Doss, Timothy J Herron

  • 1Neurology Service (127E), Department of Veterans Affairs Northern California Health Care System, 150 Muir Rd, Martinez, CA 95553, USA. dlwoods@ucdavis.edu

Journal of Rehabilitation Research and Development
|January 24, 2013
PubMed
Summary
This summary is machine-generated.

Older adults with normal hearing show reduced ability to identify speech sounds in noise. However, their sentence understanding remains intact, suggesting preserved cognitive processing despite age-related auditory changes.

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Area of Science:

  • Auditory Neuroscience
  • Gerontology
  • Speech Perception

Background:

  • Age-related hearing loss impacts speech understanding, even in individuals with normal audiometric thresholds.
  • Potential causes include declines in phonological, semantic, or lexical processing abilities.

Purpose of the Study:

  • To investigate age-related changes in speech perception in noise among older adults with normal hearing (ONH).
  • To differentiate between phonological processing deficits and intact higher-level language comprehension in aging.

Main Methods:

  • Experiment 1: California Syllable Test (CaST) to assess consonant identification in noise.
  • Experiment 2: Sentence reception thresholds (SeRTs) using Quick Speech in Noise Test and Hearing in Noise Test.

Main Results:

  • ONH subjects exhibited impaired consonant identification in noise compared to younger peers, especially for difficult consonants.
  • CaST performance was influenced by age and audiometric thresholds.
  • No significant age-related decline in SeRTs was found, indicating preserved sentence understanding.

Conclusions:

  • Older adults with normal hearing retain sentence-level speech understanding despite age-related declines in phonological processing.
  • Preserved abilities include identifying simpler speech sounds and intact top-down contextual processing.
  • Findings provide benchmarks for audiological rehabilitation in older adults.