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Related Experiment Videos

Brainstem auditory evoked potentials in receptive developmental language disorder.

N Akshoomoff1, E Courchesne, R Yeung-Courchesne

  • 1Neuropsychology Research Laboratory, Children's Hospital Research Center of San Diego.

Brain and Language
|October 1, 1989
PubMed
Summary
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Receptive developmental language disorder (RDLD) may not stem from auditory processing issues. Brainstem auditory evoked potentials (BAEPs) in RDLD patients were similar to controls, suggesting initial auditory pathway function is not the cause.

Area of Science:

  • Neuroscience
  • Developmental Pediatrics
  • Audiology

Background:

  • Receptive developmental language disorder (RDLD) is sometimes linked to auditory processing deficits.
  • The specific brain region responsible for such deficits in RDLD remains unidentified.
  • Brainstem auditory evoked potentials (BAEPs) assess early auditory pathway function.

Purpose of the Study:

  • To investigate if auditory processing deficits, specifically in the brainstem pathways, underlie RDLD.
  • To compare BAEPs in individuals with RDLD to those in a control group.

Main Methods:

  • Studied 12 individuals with RDLD (ages 12-19) and 12 controls (ages 14-24).
  • Recorded BAEPs under varying click intensity and stimulation rates.
  • Compared BAEP results between the RDLD group, control group, and established hospital norms.

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Main Results:

  • BAEPs in the RDLD group were comparable to the control group.
  • BAEPs for the RDLD group also aligned with hospital norms across different conditions.
  • No significant differences were found in early auditory processing as measured by BAEPs.

Conclusions:

  • The study suggests that deficits in the neurophysiological systems measured by BAEPs are not essential for RDLD.
  • Initial auditory processing stages reflected by BAEPs do not appear to be the primary cause of RDLD.
  • This finding helps to narrow down potential neuroanatomical causes of receptive developmental language disorder.