Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Modulation detection in subjects with relatively flat hearing losses.

S P Bacon1, R M Gleitman

  • 1Department of Speech and Hearing Science, Arizona State University, Tempe.

Journal of Speech and Hearing Research
|June 1, 1992
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Effects of ipsilateral and contralateral precursors on overshoot.

The Journal of the Acoustical Society of America·2000
Same author

Contributions of suppression and excitation to simultaneous masking: effects of signal frequency and masker-signal frequency relation.

The Journal of the Acoustical Society of America·2000
Same author

On the decline in overshoot at high masker levels.

The Journal of the Acoustical Society of America·2000
Same author

Effects of ipsilateral and contralateral precursors on the temporal effect in simultaneous masking with pure tones.

The Journal of the Acoustical Society of America·2000
Same author

Temporal integration in the presence of off-frequency maskers.

The Journal of the Acoustical Society of America·2000
Same author

Effects of aspirin on psychophysical measures of frequency selectivity, two-tone suppression, and growth of masking.

The Journal of the Acoustical Society of America·1999

Normal hearing and hearing loss subjects show similar temporal modulation transfer functions (TMTFs) when tested at comparable sensation levels. This suggests a broad listening bandwidth is crucial for temporal resolution tasks.

Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics
  • Signal Processing

Background:

  • Temporal resolution is critical for understanding speech and other complex auditory signals.
  • Amplitude modulation (AM) detection is a key measure of temporal processing ability.
  • Hearing impairment can affect temporal processing, but the extent and underlying mechanisms are not fully understood.

Purpose of the Study:

  • To investigate temporal modulation transfer functions (TMTFs) in normal-hearing and hearing-impaired listeners.
  • To examine the influence of carrier sound pressure level (SPL) and sensation level (SL) on TMTFs.
  • To determine the relationship between temporal processing, listening bandwidth, and hearing loss.

Main Methods:

  • Measured modulation detection thresholds as a function of modulation frequency in 5 normal-hearing and 8 hearing-impaired subjects.

Related Experiment Videos

  • Used a sinusoidally amplitude-modulated (SAM) broadband noise carrier.
  • Fitted TMTFs with a low-pass filter equation to derive time constants.

    • Main Results:

    • TMTFs were well-described by a low-pass filter function in both groups.
    • Normal-hearing TMTFs were largely independent of carrier SPL, with a slight increase in time constant at lower levels.
    • Hearing-impaired TMTFs were similar to normal-hearing TMTFs at equal SPLs, but showed differences at equal SLs, particularly at low SLs.
    • One hearing-impaired subject exhibited significantly longer time constants, irrespective of comparison level.

    Conclusions:

    • A broad listening bandwidth appears essential for normal temporal resolution.
    • When tested at comparable sensation levels, hearing impairment does not significantly alter TMTFs, suggesting loudness normalization plays a role.
    • Individual differences and other factors beyond peripheral hearing sensitivity can impact temporal processing abilities.