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A developmental study of bone conduction auditory brain stem response in infants.
E Y Yang1, A L Rupert, G Moushegian
1School of Human Communication Disorders, Dalhousie University, Halifax, Nova Scotia.
Ear and Hearing
|August 1, 1987
Summary
Temporal bone placement for bone conduction auditory brainstem response (ABR) testing in infants yields shorter wave V latencies. This method enhances the reliability of ABR as a diagnostic tool for infants.
Area of Science:
- Audiology
- Neuroscience
- Developmental Pediatrics
Background:
- Bone conduction auditory brainstem response (ABR) is a valuable tool for assessing infant hearing.
- Understanding developmental differences in ABR is crucial for accurate diagnosis.
Purpose of the Study:
- To evaluate the impact of vibrator placement on bone conduction ABR in infants and adults.
- To assess the interaural attenuation of bone conduction stimuli using masking in different age groups.
Main Methods:
- Two studies were conducted: vibrator placement and masking.
- Auditory brainstem responses (ABR) were recorded from newborns, 1-year-olds, and adults.
- Vibrator placements included frontal, occipital, and temporal bones, with and without ipsilateral masking.
Main Results:
- Temporal bone placements resulted in significantly shorter wave V latencies in neonates and 1-year-olds compared to frontal or occipital placements.
- Differences in wave V latencies were minimal in adults across different vibrator placements.
- Interaural attenuation was greatest in neonates and smallest in adults for bone conduction click stimuli.
Conclusions:
- Temporal bone placement is recommended for bone conduction ABR testing in infants and 1-year-olds in specific situations.
- Bone conduction ABR is a feasible and reliable diagnostic method for infant hearing assessment.
- Findings highlight developmental variations in auditory pathway processing relevant to ABR testing.