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Related Experiment Videos

Human auditory steady state potentials.

D R Stapells, D Linden, J B Suffield

    Ear and Hearing
    |March 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

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    Auditory steady-state potentials, particularly the 40 Hz response, offer objective audiometry. This 40 Hz response shows reliable amplitude and latency changes with stimulus intensity, approaching behavioral hearing thresholds.

    Area of Science:

    • Neuroscience
    • Audiology
    • Signal Processing

    Background:

    • Auditory steady-state potentials (ASSPs) are crucial for objective audiometry.
    • Understanding ASSP characteristics is vital for accurate hearing assessments.

    Purpose of the Study:

    • To investigate the influence of stimulus rate, intensity, and frequency on ASSPs.
    • To compare signal averaging and Fourier analysis for ASSP measurement.

    Main Methods:

    • ASSPs were recorded using signal averaging and on-line Fourier analysis.
    • Stimulus parameters included rates of 10-60/sec, varying intensity, and tonal frequencies.
    • Data were analyzed for amplitude and latency variations.

    Main Results:

    Related Experiment Videos

  • A 40 Hz response showed maximal amplitude at stimulus rates of 40-45/sec.
  • Response amplitude decreased linearly with decreasing stimulus intensity, approaching behavioral thresholds.
  • Absolute amplitude decreased as tonal frequency increased.

    • Conclusions:

    • The 40 Hz ASSP is a reliable objective audiometry measure.
    • Both signal averaging and Fourier analysis yield comparable results.
    • Fourier analysis offers advantages in speed and cost-effectiveness for ASSP assessment.