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High-frequency sensitivity in infants

B Schneider, S E Trehub, D Bull

    Science (New York, N.Y.)
    |February 29, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Adults showed better hearing sensitivity than infants at 10,000 Hz. However, both age groups demonstrated similar auditory thresholds at 19,000 Hz, indicating comparable high-frequency hearing.

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    Area of Science:

    • Audiology
    • Developmental Neuroscience
    • Hearing Science

    Background:

    • Infant hearing development is crucial for speech and language acquisition.
    • High-frequency hearing sensitivity differences between infants and adults are not fully understood.
    • Understanding auditory development informs early intervention strategies.

    Purpose of the Study:

    • To compare auditory thresholds in infants and adults at high frequencies (10,000 and 19,000 Hz).
    • To investigate age-related differences in high-frequency hearing sensitivity.

    Main Methods:

    • Auditory brainstem response (ABR) or behavioral audiometry was used to determine hearing thresholds.
    • Stimuli consisted of half-octave bands of noise centered at 10,000 Hz and 19,000 Hz.
    • Thresholds were measured in a group of infants and a group of adults.

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    Main Results:

    • Adults exhibited significantly better auditory sensitivity than infants at 10,000 Hz.
    • At 19,000 Hz, auditory thresholds were comparable between infants and adults.
    • These findings suggest a developmental trajectory for high-frequency hearing sensitivity.

    Conclusions:

    • Infants and adults show distinct patterns of high-frequency hearing sensitivity.
    • Hearing at 19,000 Hz may be mature earlier in development than hearing at 10,000 Hz.
    • Further research is needed to explore the maturation of ultra-high frequency hearing.