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Related Experiment Videos

Onset-offset effects of the human brainstem auditory-evoked response.

L F Elfner, A R Barnes

    The Journal of Auditory Research
    |April 1, 1983
    PubMed
    Summary

    Brainstem auditory-evoked responses (BSAERs) show that the onset response is stable across stimulus durations. However, offset responses are unreliable for durations under 5 msec, indicating significant variability.

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    Area of Science:

    • Audiology
    • Neuroscience
    • Auditory Evoked Potentials

    Background:

    • Brainstem auditory-evoked responses (BSAERs) are crucial for assessing auditory pathway function.
    • Understanding the impact of stimulus duration on BSAERs is vital for accurate interpretation.

    Purpose of the Study:

    • To investigate the effect of varying tonal stimulus durations on Brainstem Auditory Evoked Responses (BSAERs).
    • To analyze the latency and reliability of the onset and offset responses, specifically Jewett Wave V.

    Main Methods:

    • BSAERs were recorded from 4 normal-hearing adults using a 2-kHz tonal stimulus.
    • Stimulus durations ranged from 2 to 8 msec at 60 dB sensation level.
    • Latency of Jewett Wave V was measured, averaging 4096 sweeps per condition.

    Main Results:

    • A reliable Wave V onset response was observed for all tested stimulus durations (2-8 msec).
    • Offset responses were not consistently detected for stimulus durations shorter than 5 msec.
    • Onset response latency for Wave V remained stable across durations, while offset response latency showed significant intrasubject variability.

    Conclusions:

    • The onset response in BSAERs is robust and stable across a range of stimulus durations.
    • The offset response is highly dependent on stimulus duration and less reliable, particularly for shorter durations.
    • Findings highlight the importance of considering stimulus duration when analyzing BSAERs, especially for offset responses.

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