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Auditory neurophysiologic responses and discrimination deficits in children with learning problems
N Kraus1, T J McGee, T D Carrell
1Communication Sciences and Disorders, Northwestern University, Northwestern University, Evanston, IL 60208, USA.
Science (New York, N.Y.)
|August 16, 1996
Summary
Children with learning disabilities may struggle with speech sound discrimination due to auditory pathway issues. This impacts diagnosis and therapy for learning and attention disorders.
Area of Science:
- Neuroscience
- Developmental Psychology
- Speech-Language Pathology
Background:
- Children with learning problems often exhibit difficulties discriminating rapid acoustic changes in speech.
- These auditory processing deficits can significantly impact language development and academic success.
Purpose of the Study:
- To investigate the relationship between behavioral speech sound discrimination and electrophysiological measures in children with and without learning problems.
- To determine if auditory pathway impairments contribute to speech discrimination deficits in children with learning disabilities.
Main Methods:
- Compared behavioral discrimination of speech changes (/dalpha/ vs. /galpha/, /balpha/ vs. /walpha/) in normal children and children with learning problems.
- Utilized electrophysiological measures, independent of attention or voluntary response, to assess neural processing of speech sounds.
Main Results:
- Impaired behavioral discrimination of rapid speech changes in children with learning problems correlated with diminished electrophysiological responses.
- Electrophysiological measures reflected deficits in discriminating both /dalpha/ versus /galpha/ and /balpha/ versus /walpha/ in children with learning problems.
Conclusions:
- Speech discrimination deficits in some children originate in the auditory pathway before conscious perception.
- Findings have implications for differential diagnosis and targeted therapeutic strategies for learning disabilities and attention disorders.