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

Operating ranges and intensity psychophysics for cochlear implants. Implications for speech processing strategies.

B E Pfingst

    Archives of Otolaryngology (Chicago, Ill. : 1960)
    |March 1, 1984
    PubMed
    Summary

    Cochlear implant users

    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 electrode configuration and place of stimulation on speech perception with cochlear prostheses.

    Journal of the Association for Research in Otolaryngology : JARO·2001
    Same author

    Effects of electrode configuration and stimulus level on rate and level discrimination with cochlear implants.

    Journal of the Association for Research in Otolaryngology : JARO·2001
    Same author

    Cochlear implant thresholds: comparison of middle latency responses with psychophysical and cortical-spike-activity thresholds.

    Hearing research·2001
    Same author

    Effects of time after deafening and implantation on guinea pig electrical detection thresholds.

    Hearing research·2000
    Same author

    Across-species comparisons of psychophysical detection thresholds for electrical stimulation of the cochlea: II. Strength-duration functions for single, biphasic pulses.

    Hearing research·1999
    Same author

    Across-species comparisons of psychophysical detection thresholds for electrical stimulation of the cochlea: I. Sinusoidal stimuli.

    Hearing research·1999

    Area of Science:

    • Neuroscience
    • Audiology
    • Biomedical Engineering

    Background:

    • Cochlear implants (CIs) aim to restore hearing by electrically stimulating the auditory nerve.
    • Understanding how CIs encode sound intensity is crucial for optimizing speech perception.
    • Psychophysical data from human and animal models provide insights into CI sound processing.

    Purpose of the Study:

    • To review and characterize psychophysical data on intensity detection and perception in cochlear implant users.
    • To analyze the relationship between stimulus frequency, intensity, and perceptual outcomes.
    • To inform the development of advanced speech encoding strategies for cochlear implants.

    Main Methods:

    • Review of human and monkey psychophysical data.
    • Analysis of threshold contours for sinusoidal stimuli.
    • Examination of equal loudness contours, loudness growth functions, and intensity difference limens.

    Main Results:

    • Threshold contours show frequency-dependent slopes, with near-zero slope below 100 Hz and increasing slopes at higher frequencies.
    • Equal loudness contours initially follow threshold contours but shift with increasing intensity, exhibiting frequency-dependent slopes.
    • Loudness perception and intensity discrimination are significantly influenced by stimulus frequency and intensity levels.

    Conclusions:

    • Auditory nerve membrane characteristics and other factors significantly alter electrical stimuli from cochlear implants.
    • These alterations necessitate careful consideration in designing speech encoding strategies for improved CI performance.
    • Further research into the interaction of electrical stimulation parameters and neural processing is warranted.

    Related Experiment Videos