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Related Experiment Videos

Contingent negative variation audiometry in children.

T S Prevec, K Ribaric, D Butinar

    Audiology : Official Organ of the International Society of Audiology
    |January 1, 1984
    PubMed
    Summary
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    Contingent negative variation audiometry (CNV-A) can be adapted for children. Modifications to the procedure, including engaging stimuli and slower rates, enable reliable hearing threshold assessment in young children.

    Area of Science:

    • Auditory Neuroscience
    • Pediatric Audiology

    Background:

    • Contingent Negative Variation audiometry (CNV-A) is an established method for assessing hearing thresholds in adults.
    • Its applicability to pediatric populations has been limited due to challenges in maintaining children's attention.

    Purpose of the Study:

    • To determine the feasibility and effectiveness of CNV-A in children aged 3-7 years.
    • To adapt the CNV-A protocol to improve data acquisition in pediatric subjects.

    Main Methods:

    • Initial testing with standard adult CNV-A protocol on 23 children (5-7 years) showed limited success.
    • Protocol modifications included prolonged S1-S2 intervals, attractive visual stimuli (S2), and slower repetition rates.
    • The modified protocol was applied to subgroups of children aged 5-7 years and 3-5 years.

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    Main Results:

    • Modified CNV-A successfully elicited high-amplitude CNV in 9/10 older children (10.1 +/- 4 mu V) and 18/18 younger children (approx. 9 mu V).
    • Hearing threshold estimates using CNV-A in conjunction with behavioral methods showed differences comparable to adult values (older group: 8.8 +/- 8 dB; younger group: 3 +/- 10.4 dB and 8.6 +/- 6.5 dB).

    Conclusions:

    • Adapting the CNV-A procedure by enhancing subject engagement and adjusting stimulus timing is crucial for pediatric application.
    • CNV-A, when combined with behavioral audiometry, offers a reliable method for estimating hearing thresholds in children, particularly in challenging cases.