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Related Experiment Videos

Frequency selectivity in loudness adaptation and auditory fatigue.

S Charron1, M C Botte

  • 1Laboratoire de Psychologie Expérimentale, CNRS, Paris, France.

The Journal of the Acoustical Society of America
|January 1, 1988
PubMed
Summary

Loudness adaptation occurs when a brief tone reduces the perceived loudness of a continuous tone in the same ear. This adaptation is frequency-specific, decreasing as tone frequencies differ, suggesting a shared cochlear mechanism with auditory fatigue.

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Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics
  • Sensory Physiology

Background:

  • Monaural tone presentation can induce loudness adaptation.
  • Frequency selectivity of this adaptation is not fully understood.

Purpose of the Study:

  • Investigate the frequency selectivity of loudness adaptation.
  • Examine the relationship between loudness adaptation and auditory fatigue.

Main Methods:

  • Used successive magnitude estimations to measure loudness.
  • Presented monaural test tones and inducer tones to the same ear.
  • Varied inducer frequency and level relative to the test tone.

Main Results:

  • Adaptation was maximal when inducer and test tones had the same frequency.

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  • Adaptation decreased as frequency difference increased.
  • Selectivity shifted from frequency-specific to broader at higher inducer levels.

    • Conclusions:

    • Loudness adaptation exhibits frequency selectivity.
    • Data suggest a common cochlear origin for adaptation and high-level fatigue.
    • Mechanisms of adaptation and fatigue may be continuous.