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Updated: May 13, 2026
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Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities
Published on: January 29, 2014
Auditory event related potentials in children with peripheral hearing loss
Amineh Koravand1, Benoît Jutras, Maryse Lassonde
1École d'orthophonie et d'audiologie, Université de Montréal and Centre de recherche, CHU Sainte-Justine, Canada. amineh.koravand@uottawa.ca
Summary
Children with hearing loss show abnormal N2 brain responses, indicating potential central auditory processing deficits. This neurophysiological marker may help identify processing issues in pediatric hearing loss.
Area of Science:
- Neuroscience
- Audiology
- Developmental Pediatrics
Background:
- Hearing loss in children can impact auditory development and processing.
- Central auditory processing disorder (CAPD) shares some symptoms with hearing loss, necessitating accurate diagnostic tools.
Purpose of the Study:
- To investigate neurophysiological responses using cortical auditory evoked potentials (CAEPs) and Mismatch Negativity (MMN) in children with hearing loss.
- To differentiate auditory processing in children with hearing loss, CAPD, and normal hearing.
Main Methods:
- Recorded CAEPs and MMN in 40 children (9-12 years old) across three groups: hearing loss (n=12), CAPD (n=12), and normal hearing (n=16).
- Utilized passive oddball paradigms with both nonverbal and verbal auditory stimuli.
Main Results:
- No significant group differences were found for the P1 component.
- Children with hearing loss exhibited reduced N2 amplitude compared to normal-hearing children.
- N2 amplitude differences were not significant between children with hearing loss and those with CAPD.
- A trend suggested larger MMN amplitude in children with hearing loss compared to those with CAPD.
Conclusions:
- Abnormal N2 characteristics may serve as a neurophysiological marker for central auditory processing deficits in children with hearing loss.
- Findings suggest potential maturational delays and/or deficits in central auditory processing associated with pediatric hearing loss.
