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Infant Auditory Processing and Event-related Brain Oscillations
Published on: July 1, 2015
Effect of early onset otitis media on brainstem and cortical auditory processing
Sandeep Maruthy1, Jayaram Mannarukrishnaiah
1Department of Audiology, All India Institute of Speech and Hearing, Mysore, India. msandeepa@gmail.com.
Behavioral and Brain Functions : BBF
|April 4, 2008
Summary
Early childhood otitis media (OM) negatively impacts auditory processing in the brainstem, but effects may resolve by age 4. This study investigated auditory processing in children with early OM.
Area of Science:
- Neuroscience
- Audiology
- Developmental Pediatrics
Background:
- Otitis media (OM) in early life can impair auditory sensitivity and neural development.
- Previous studies noted brainstem abnormalities after auditory deprivation, but few focused on infants with early OM.
- Early OM may disrupt auditory processing at both brainstem and cortical levels due to distorted neural input.
Purpose of the Study:
- To determine the effects of early-onset OM on brainstem and cortical auditory processing.
- To investigate the persistence of these effects in young children.
Main Methods:
- Cross-sectional study comparing 30 children (3.1-5.6 years) with early OM (6-12 months) to age/gender-matched controls.
- Recorded auditory brainstem responses (ABRs) and late latency responses (LLRs).
- Analyzed data using independent t-tests and Pearson correlation.
Main Results:
- Children with early OM showed increased central conduction time and reduced ABR wave I/III amplitude.
- LLR wave latencies were significantly shorter in children with early OM.
- Significant differences were primarily observed in 3-year-old children; ABR/LLR differences resolved by 4.1 years.
Conclusions:
- Early-onset OM negatively affects brainstem auditory processing, even with short durations.
- Cortical structures may compensate for prolonged central conduction time.
- While effects appeared to resolve by 4.1 years, longitudinal studies are needed for confirmation.
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