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Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses
Published on: January 23, 2017
Thresholds determined using the monotic and dichotic multiple auditory steady-state response technique in
1School of Audiology & Speech Sciences, University of British Columbia, Vancouver, Canada.
Scandinavian Audiology
|May 2, 2001
Summary
Auditory steady-state responses (ASSRs) using multiple amplitude-modulated tones are effective for hearing threshold assessment. This dichotic technique significantly reduces recording time without compromising accuracy for detecting normal hearing.
Area of Science:
- Audiology
- Neuroscience
- Hearing Science
Background:
- Auditory steady-state responses (ASSRs) are objective measures of hearing.
- Previous studies explored multiple ASSR techniques, but comparisons between monotic and dichotic stimulation for threshold estimation require further investigation.
Purpose of the Study:
- To replicate and extend previous multiple ASSR studies.
- To determine if dichotic stimulation affects hearing threshold assessment compared to monotic conditions.
Main Methods:
- ASSRs were elicited using single or multiple 77-105 Hz amplitude-modulated tones (0.5, 1, 2, 4 kHz) presented to one or both ears.
- Behavioral and ASSR thresholds were assessed in both monotic and dichotic stimulus conditions.
- Stimulus levels ranged from 15 to 22 dB SPL.
Main Results:
- Behavioral and ASSR thresholds in this study were 0-10 dB lower (better) than previous monotic studies.
- No significant differences were found in ASSR thresholds between dichotic and monotic stimulus conditions.
- Dichotic multiple AM tone stimulation did not alter ASSR for clinically significant threshold estimation.
Conclusions:
- Dichotic multiple ASSR technique is a feasible method for estimating hearing thresholds.
- This technique substantially reduces recording time compared to conventional single-stimulus methods.
- It is effective for detecting normal hearing.
