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[Age-dependent electric response audiometry (ERA)-findings in correlation with speech development (author's transl)].

T Karnahl, C Holm

    HNO
    |September 1, 1975
    PubMed
    Summary
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    Periods of speech-certainty and uncertainty in children are linked to auditory system development. Electric Response Audiometry (ERA) reveals distinct low and high-frequency auditory processing patterns related to speech development stages.

    Area of Science:

    • Audiology
    • Speech-Language Pathology
    • Developmental Neuroscience

    Context:

    • Speech development in children exhibits periods of certainty and uncertainty.
    • Traditional audiometry methods do not fully explain these developmental speech behaviors.
    • Understanding these phases is crucial for identifying potential speech and hearing impairments early.

    Purpose:

    • To investigate the relationship between auditory system development and speech-certainty/uncertainty phases in children.
    • To explore the utility of Electric Response Audiometry (ERA) in characterizing these developmental speech behaviors.
    • To analyze electroglottographic data for distinct patterns associated with speech certainty and uncertainty.

    Summary:

    • Nineteen typically developing children were analyzed using electroglottography and phonography, then assessed with Electric Response Audiometry (ERA) at 0.5, 1.0, 2.0, and 4.0 kHz.

    Related Experiment Videos

  • Speech certainty occurred at mean ages of 4.5 and 6.5 years, while speech uncertainty was observed at 2.5 and 5.5 years.
  • ERA data, analyzed for amplitude and latency, revealed distinct low-frequency (0.5-1.0 kHz) and high-frequency (2.0-4.0 kHz) auditory processing dynamics. Electroglottogram analysis showed unique amplitude spectra for speech-certainty and speech-uncertainty phases.

    • Impact:

    • This study provides objective audiological measures to understand speech development variability.
    • Findings suggest ERA can differentiate speech development stages, aiding in the diagnosis of hearing and speech disorders.
    • The identification of frequency-specific auditory processing patterns offers new insights into the neural basis of speech development.