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Related Experiment Videos

Clinical application of distorted speech audiometry

A K Karlsson1, U Rosenhall

  • 1Department of Audiology, Sahlgrenska University Hospital, Göteborg, Sweden.

Scandinavian Audiology
|January 1, 1995
PubMed
Summary
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Low-redundant speech tests effectively identify auditory processing issues in patients with retrocochlear or central lesions. Interrupted speech (7 interruptions/s) and time-compressed speech demonstrated the highest sensitivity for detecting these auditory deficits.

Area of Science:

  • Audiology
  • Neuroscience
  • Speech-Language Pathology

Background:

  • Retrocochlear and central auditory lesions can significantly impair speech recognition.
  • Assessing auditory function in these patient groups requires sensitive and specific diagnostic tools.
  • Low-redundant speech tests offer a potential method for evaluating auditory processing deficits.

Purpose of the Study:

  • To determine the clinical validity of four low-redundant speech tests.
  • To compare the sensitivity of interrupted, time-compressed, and filtered speech tests in patients with auditory lesions.
  • To identify which speech tests are most effective in detecting retrocochlear or central auditory processing disorders.

Main Methods:

  • Four low-redundant speech tests were administered to 83 patients with retrocochlear or central auditory lesions.

Related Experiment Videos

  • Speech tests included interrupted speech (7 or 10 interruptions/s), time-compressed speech, and filtered speech.
  • Performance was compared between patients and age-matched normal-hearing controls.

    • Main Results:

    • Patients with auditory lesions exhibited significantly lower speech recognition scores compared to controls.
    • The sensitivity ratings for the tested speech methods ranged from 47% to 80%.
    • The highest sensitivity was observed in patients with cerebellopontine angle tumors and temporal lobe lesions, while vascular brainstem lesions showed the lowest.
    • Interrupted speech (7 interruptions/s) and time-compressed speech yielded the highest sensitivity.

    Conclusions:

    • Low-redundant speech tests are clinically valid for identifying retrocochlear and central auditory lesions.
    • Interrupted speech (7 interruptions/s) and time-compressed speech are the most sensitive tests for detecting these auditory processing deficits.
    • These tests can aid in the diagnosis and localization of auditory pathway impairments.