Auditory brainstem response, middle latency response, and late cortical evoked potentials in children with learning disabilities

Suzanne C. Purdy*, Andrea S. Kelly, Merren G. Davies

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    80 Citations (Scopus)

    Abstract

    Auditory evoked potentials (AEPs) and behavioral tests were used to evaluate auditory processing in 10 children aged 7 to 11 years who were diagnosed as learning disabled (LD). AEPs included auditory brainstem responses (ABRs), middle latency responses (MLRs), and late cortical responses (P1, N1, P2, P3). Late cortical responses were recorded using an active listening oddball procedure. Auditory processing disorders were suspected in the LD children after a psychologist found phonologic processing and auditory memory problems. A control group of 10 age- and gender-matched children with no hearing or reported learning difficulties was also tested. Teacher ratings of classroom listening and SCAN Competing Words and Staggered Spondaic Word scores were poorer in the LD children. There were minor ABR latency differences between the two groups. Wave Na of the MLR was later and Nb was smaller in the LD group. The main differences in cortical responses were that P1 was earlier and P3 was later and smaller in the LD group.

    Original languageEnglish
    Pages (from-to)367-382
    Number of pages16
    JournalJournal of the American Academy of Audiology
    Volume13
    Issue number7
    Publication statusPublished - Jul 2002

    Keywords

    • Auditory evoked response
    • Auditory processing disorder
    • Learning disability

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