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Related Experiment Videos

Auditory frequency discrimination in children with specific language impairment: a longitudinal study.

P R Hill1, J H Hogben, D M V Bishop

  • 1Department of Experimental Psychology, Oxford University, South Parks Road, Oxford OX1 3UD, United Kingdom. penny.hill@magdalen.oxon.org

Journal of Speech, Language, and Hearing Research : JSLHR
|January 18, 2006
PubMed
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Children with specific language impairment (SLI) show persistent deficits in frequency discrimination (FD), suggesting this auditory processing issue is not just a developmental lag. Temporal processing appears less affected in most children with SLI.

Area of Science:

  • Auditory Neuroscience
  • Developmental Psychology
  • Speech and Language Pathology

Background:

  • Specific Language Impairment (SLI) is often linked to auditory processing deficits.
  • The specific nature of these deficits (temporal processing vs. frequency discrimination) and their developmental trajectory remain unclear.
  • Longitudinal studies are crucial for distinguishing developmental lags from permanent impairments in SLI.

Purpose of the Study:

  • To investigate auditory processing in children with SLI over a 42-month period.
  • To determine if deficits lie in temporal processing, frequency discrimination (FD), or both.
  • To assess the developmental course of these auditory abilities in SLI.

Main Methods:

  • Longitudinal study retesting 10 children with SLI and 12 controls after 42 months.

Related Experiment Videos

  • Measurement of frequency discrimination (FD) thresholds.
  • Assessment of temporal resolution using auditory backward masking.

    • Main Results:

    • Children with SLI exhibited significantly elevated FD thresholds at both time points compared to controls.
    • Most children with SLI showed normal temporal resolution, though two had exceptionally high thresholds.
    • Greater variability in FD performance was observed in the SLI group.

    Conclusions:

    • Persistent deficits in frequency discrimination are evident in children with SLI.
    • Auditory processing difficulties, particularly in FD, are a significant characteristic of SLI.
    • Heterogeneity exists in auditory function within the SLI population, impacting both FD and temporal processing.