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Updated: Mar 25, 2026

Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities

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Published on: January 29, 2014

Pediatric central auditory processing disorder showing elevated threshold on pure tone audiogram.

Yukihide Maeda¹, Atsuko Nakagawa¹, Rie Nagayasu¹

¹Department of Otolaryngology, Head and Neck Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan.

Auris, Nasus, Larynx

|February 29, 2016

Summary

This summary is machine-generated.

Central Auditory Processing Disorder (CAPD) can be diagnosed even with elevated pure tone audiogram (PTA) thresholds if peripheral function is normal. This finding expands diagnostic possibilities for CAPD, aiding children with listening difficulties.

Keywords:

Auditory brainstem response Auditory steady state response Central auditory processing disorder Distortion-product otoacoustic emission Functional hearing loss Pure tone audiogram

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Area of Science:

Audiology
Neuroscience
Pediatric Medicine

Background:

Central Auditory Processing Disorder (CAPD) impairs listening in noise despite normal peripheral hearing.
Diagnosis typically requires normal pure tone audiogram (PTA) results.
This study investigates CAPD diagnosis with elevated PTA thresholds.

Observation:

Three pediatric cases presented with CAPD and elevated PTA thresholds.
Distortion product otoacoustic emissions (DPOAE), auditory brainstem response (ABR), and auditory steady state response (ASSR) confirmed normal peripheral auditory function.
Patients reported significant difficulty understanding conversations, especially in noisy environments.

Findings:

Central auditory testing, including dichotic speech tests and binaural interaction tests, confirmed CAPD.
Elevated PTA thresholds were observed despite normal peripheral auditory pathway function (DPOAE, ABR, ASSR).
These findings suggest that PTA threshold shifts can be a symptom of central auditory dysfunction in CAPD.

Implications:

This research expands the diagnostic criteria for CAPD, allowing for identification in cases with atypical PTA results.
It highlights the importance of comprehensive auditory assessment beyond standard PTA.
The findings may lead to earlier and more accurate diagnosis and intervention for children with CAPD.