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Related Experiment Videos

Age-related changes in binaural processing: II. Behavioral findings.

D R Martin1, J L Cranford

  • 1Department of Communication Disorders, Southwest Missouri State University, Springfield.

The American Journal of Otology
|September 1, 1991
PubMed
Summary

Elderly individuals show poorer performance on auditory tasks measuring both overall sound processing and selective attention. Behavioral and electrophysiologic tests reveal age-related declines but do not correlate, suggesting different underlying neural mechanisms.

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Area of Science:

  • Audiology
  • Neuroscience
  • Gerontology

Background:

  • Previous research identified electrophysiologic correlates of impaired binaural processing in older adults.
  • Age-related changes in auditory function can impact communication and cognitive abilities.

Purpose of the Study:

  • To compare behavioral and electrophysiologic measures of binaural processing in older versus younger adults.
  • To investigate the relationship between behavioral performance and electrophysiologic correlates of auditory attention in aging.

Main Methods:

  • Subjects from a prior study completed a Dichotic Digits Recognition task under two conditions: full attention and selective attention.
  • Performance was assessed behaviorally by digit recognition accuracy.
  • Electrophysiologic correlates were measured in the preceding study.

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Main Results:

  • Older subjects performed significantly worse than younger subjects on both the channel capacity and selective attention measures.
  • Age-related decrements were evident in both behavioral and electrophysiologic testing.
  • No significant correlation was found between behavioral performance and electrophysiologic measures.

Conclusions:

  • Both behavioral and electrophysiologic tests can detect age-related declines in binaural processing.
  • These tests may not reflect the same underlying neural processes in aging auditory systems.
  • Further research is needed to elucidate the distinct neural mechanisms involved in age-related auditory changes.