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Psychophysical and Physiological Aspects of Auditory Temporal Processing in Listeners with Noise-Induced Sensorineural Hearing Loss

  • R. J. Salvi
  • S. S. Saunders
  • W. A. Ahroon
  • B. G. Shivapuja
  • S. Arehole
Part of the NATO ASI Series book series (NSSA, volume 111)

Abstract

One of the most serious changes in hearing that results from acoustic trauma is the deterioration in speech discrimination. However, because of the complex nature of the speech signal, it has been difficult to determine the underlying psychoacoustic and physiological mechanisms that result in poor speech perception. Consequently, many researchers have turned to simpler acoustic stimuli to investigate the performance characteristics of hearing-impaired listeners. The experiments carried out with simple acoustic stimuli have provided a wealth of information on the distortions that occur in intensity discrimination [1–3], loudness growth [4,5], frequency discrimination [6,7], frequency resolution [8,9], and temporal integration [10,11]. One area in which our knowledge has increased considerably over the past 10–15 years is in understanding the changes that occur in frequency selectivity following noise-exposure. Intense noise exposures are known to result in the loss of tuning in the basilar membrane vibration pattern (see Patuzzi this volume) and the frequency response areas of hair cell and single auditory nerve fibers (see Cody and Russell and Liberman et al. this volume). The change in physiological tuning has in turn been reflected in wider psychophysical tuning curves in noise-exposed subjects [9].

Keywords

Hearing Loss Auditory Nerve Fiber Probe Tone Auditory Temporal Processing Single Auditory Nerve Fiber 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • R. J. Salvi
    • 1
  • S. S. Saunders
    • 1
  • W. A. Ahroon
    • 1
  • B. G. Shivapuja
    • 1
  • S. Arehole
    • 1
  1. 1.Callier Center for Communication DisordersUniversity of Texas at DallasDallasUSA

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