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Infant Auditory Processing and Event-related Brain Oscillations

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Brainstem correlates of temporal auditory processing in children with specific language impairment.

Madhavi Basu¹, Ananthanarayan Krishnan, Christine Weber-Fox

¹Department of Psychology, Concordia University, Canada.

Developmental Science

|February 4, 2010

Summary

Children with specific language impairment (SLI) exhibit auditory processing deficits. Brainstem responses reveal impaired neural encoding of rapid sound changes and increased sensitivity to stimulus rate in SLI children.

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Area of Science:

Neuroscience
Speech and Hearing Science
Developmental Psychology

Background:

Specific language impairment (SLI) is often linked to temporal auditory processing deficits.
Previous research suggests difficulties in identifying sounds with short intervals or rapid changes.

Purpose of the Study:

To investigate brainstem auditory processing abnormalities in children with SLI.
To determine if neural responses to rapid auditory changes are impaired in SLI.

Main Methods:

Used sustained frequency following response (FFR) to assess neural tracking of tonal sweeps.
Utilized auditory brainstem responses (ABR) to evaluate responses to varying stimulus rates.
Compared 10 children with SLI (4-11 years) to age-matched controls.

Main Results:

SLI group showed degraded FFR, failing to track rapid frequency changes, especially at faster rates.
ABR revealed longer latencies for waves III and V in SLI children.
SLI children exhibited greater ABR wave III prolongation at high stimulus rates, indicating adaptation susceptibility.

Conclusions:

Findings suggest a disruption in temporal neural activity for encoding rapid frequency changes in SLI.
Children with SLI demonstrate increased susceptibility to desynchronization at faster stimulus presentation rates.
These auditory processing deficits at the brainstem level may contribute to language impairments in SLI.