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Central auditory processing disorder: a case study.

J Jerger1, K Johnson, S Jerger

  • 1Department of Otolaryngology and Communicative Sciences, Baylor College of Medicine, Houston, TX 77030.

Journal of the American Academy of Audiology
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

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This study found a young woman with normal hearing tests had difficulty hearing due to a central auditory processing disorder. This disorder specifically impacts her ability to process sounds from different directions, especially in noisy environments.

Area of Science:

  • Neuroscience
  • Audiology
  • Cognitive Science

Background:

  • Conventional audiometric tests, including pure-tone, speech, and immittance audiometry, are standard for assessing hearing function.
  • Electrophysiologic and neuropsychologic assessments provide deeper insights into auditory pathway function and cognitive processing.
  • Central auditory processing disorder (CAPD) affects how the brain interprets sound, often leading to difficulties in complex listening environments.

Observation:

  • A young woman presented with subjective hearing difficulties in her educational setting, despite normal conventional audiometric results.
  • Standard auditory processing tests for temporal, binaural, and localization abilities were within normal limits.
  • Asymmetries were noted in middle latency (MLR) and late (LVR) auditory evoked potentials.

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Findings:

  • A significant left-ear deficit was observed in dichotic sentence identification and speech measures with competing sounds.
  • Performance on cued-target identification in noise was impaired when the target was presented to the left ear.
  • The results indicate a central auditory processing disorder with an asymmetric binaural processing deficit.

Implications:

  • This case highlights the importance of comprehensive auditory assessments beyond basic audiometry for diagnosing complex listening challenges.
  • The findings suggest that CAPD can manifest as specific binaural processing deficits, impacting real-world communication.
  • Understanding these asymmetric processing issues is crucial for developing targeted interventions for individuals with auditory processing difficulties.