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Abnormalities in cortical auditory responses in children with central auditory processing disorder.

Amineh Koravand1, Benoît Jutras1, Maryse Lassonde2

  • 1École d'orthophonie et d'audiologie, Université de Montréal and CHU Sainte-Justine Research Center, Canada.

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|January 22, 2017
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Summary

The N2 response may indicate neural deficits in children with central auditory processing disorder (CAPD). This finding suggests maturational factors may influence auditory processing in these children.

Keywords:
central auditory processing disordercortical auditory-evoked potentialsmismatch responses

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Area of Science:

  • Neuroscience
  • Audiology
  • Developmental Psychology

Background:

  • Central Auditory Processing Disorder (CAPD) affects auditory information processing.
  • Identifying neural markers is crucial for understanding CAPD.
  • Auditory cortical responses and mismatch negativity (MMN) are potential indicators.

Purpose of the Study:

  • To identify neural deficit markers in children with CAPD.
  • To measure auditory cortical responses and MMN.
  • To compare children with and without CAPD.

Main Methods:

  • Used passive oddball paradigms with verbal and nonverbal stimuli.
  • Recorded cortical auditory-evoked potentials and MMN.
  • Studied 23 children (9-12 years old), 10 with CAPD and 13 without.

Main Results:

  • No significant differences in P1 latency or amplitude between groups.
  • Children with CAPD showed prolonged N2 latency and reduced amplitude.
  • No significant group differences were found for MMN responses.

Conclusions:

  • The N2 response may serve as a marker for neural deficits in CAPD.
  • Maturational factors or alternative mechanisms might underlie central auditory processing in children with CAPD.