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Auditory brain stem evoked response characteristics in developing infants.

M C Zimmerman, D E Morgan, J R Dubno

    The Annals of Otology, Rhinology, and Laryngology
    |May 1, 1987
    PubMed
    Summary
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    Auditory brain stem response (ABR) in infants shows significant changes in wave latency during the first six months. While wave V latency is similar to adults, waves I, III, and V mature rapidly in early infancy.

    Area of Science:

    • Neuroscience
    • Developmental Biology
    • Audiology

    Background:

    • The auditory brain stem response (ABR) is a key electrophysiological measure for assessing auditory pathway function.
    • Understanding auditory system development in infants is crucial for early detection of hearing impairments.
    • Longitudinal studies are essential to track developmental changes in auditory processing.

    Purpose of the Study:

    • To longitudinally examine auditory brain stem response (ABR) development in normal infants from birth to six months.
    • To characterize developmental changes in ABR latency across various stimulus conditions.
    • To compare infant ABR maturation patterns with adult normative data.

    Main Methods:

    • A cohort of normal developing infants was studied longitudinally from newborn to six months of age.

    Related Experiment Videos

  • Auditory brain stem responses were recorded using a comprehensive range of stimulus variables.
  • Analysis focused on absolute and interwave latencies, latency-intensity functions, and repetition rate functions.

    • Main Results:

    • No significant differences were found in wave V latency-intensity functions between infants and adults.
    • Absolute and interwave latencies for waves I, III, and V showed significant developmental changes in the first six months.
    • The most rapid ABR maturation occurred between birth and two weeks, with wave I latency stabilizing earlier than waves III and V.

    Conclusions:

    • Infant auditory system maturation, as reflected by ABR, is rapid in the first few weeks of life.
    • Specific ABR components (waves I, III, V) exhibit distinct developmental trajectories.
    • A curvilinear developmental model effectively describes the observed changes in ABR latency during early infancy.