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Aging and temporal discrimination in auditory sequences.

P J Fitzgibbons1, S Gordon-Salant

  • 1Department of Audiology and Speech Language Pathology, Gallaudet University, Washington, DC 20002, USA.

The Journal of the Acoustical Society of America
|June 27, 2001
PubMed
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Older adults show reduced temporal sensitivity in auditory sequences, impacting their ability to discern changes in tempo and individual sound intervals. This age-related decline in temporal discrimination was observed across various listening conditions.

Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics
  • Human Aging Research

Background:

  • Temporal processing is crucial for auditory perception.
  • Age-related changes in sensory processing are well-documented.
  • Understanding age-related auditory temporal discrimination is vital for maintaining quality of life.

Purpose of the Study:

  • To investigate age-related differences in temporal sensitivity to inter-onset interval (IOI) changes in tonal sequences.
  • To compare temporal discrimination abilities between young and elderly adults.
  • To examine the influence of hearing loss on age-related temporal processing deficits.

Main Methods:

  • Participants included young and elderly adults, with and without high-frequency hearing loss.
  • Temporal discrimination was assessed using relative difference limens (DLs) for increments in tonal IOIs.

Related Experiment Videos

  • Discrimination tasks involved uniform changes in sequence tempo and changes in single target IOIs, with fixed or randomized locations.

    • Main Results:

    • All participants showed improved rate discrimination with longer inter-onset intervals (IOIs).
    • Discriminating single interval changes was more difficult than discriminating overall tempo changes.
    • Elderly listeners performed worse than younger listeners, particularly in discriminating brief, randomly located single intervals.

    Conclusions:

    • Aging significantly impairs temporal discrimination in auditory sequences.
    • The ability to detect changes in tempo and individual intervals declines with age.
    • Hearing loss did not significantly impact the observed age-related differences in temporal discrimination.