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Related Experiment Videos

Forward masking with equal-energy maskers.

M J Penner

    The Journal of the Acoustical Society of America
    |December 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Investigating temporal masking in chicks revealed that longer, less intense noises can increase masking effects. This challenges simple energy-based models, suggesting intensity compression in auditory processing.

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    Area of Science:

    • Auditory Neuroscience
    • Psychoacoustics
    • Animal Behavior

    Background:

    • Temporal masking is crucial for understanding auditory perception.
    • Previous models often rely on stimulus energy to predict masking effects.

    Purpose of the Study:

    • To investigate temporal masking of auditory signals in chicks using noise.
    • To examine the influence of masker duration and temporal separation on masking effectiveness.

    Main Methods:

    • Utilized a forward-masking paradigm with chicks.
    • Varied temporal separation (delta T) and noise duration while keeping masker energy constant.

    Main Results:

    • Longer, less intense noises increased masking for fixed temporal separations (delta T > 3 msec).

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  • This occurred despite reduced masker energy near the signal in time for longer maskers.

    • Conclusions:

    • Results support a modified running-average hypothesis involving stimulus intensity compression.
    • Auditory intensity compression may explain why longer maskers can be more effective, especially when temporal separation is sufficient.