Electroacoustic verification of frequency modulation systems in cochlear implant users
نویسندگان
چکیده
منابع مشابه
Electroacoustic verification of frequency modulation systems in cochlear implant users.
INTRODUCTION The frequency modulation system is a device that helps to improve speech perception in noise and is considered the most beneficial approach to improve speech recognition in noise in cochlear implant users. According to guidelines, there is a need to perform a check before fitting the frequency modulation system. Although there are recommendations regarding the behavioral tests that...
متن کاملFrequency modulation detection in cochlear implant subjects.
Frequency modulation (FM) detection was investigated in acoustic and electric hearing to characterize cochlear-implant subjects' ability to detect dynamic frequency changes and to assess the relative contributions of temporal and spectral cues to frequency processing. Difference limens were measured for frequency upward sweeps, downward sweeps, and sinusoidal FM as a function of standard freque...
متن کاملSpectro-temporal cues enhance modulation sensitivity in cochlear implant users.
Although speech understanding is highly variable amongst cochlear implants (CIs) subjects, the remarkably high speech recognition performance of many CI users is unexpected and not well understood. Numerous factors, including neural health and degradation of the spectral information in the speech signal of CIs, likely contribute to speech understanding. We studied the ability to use spectro-tem...
متن کاملSingle- and Multi-Channel Modulation Detection in Cochlear Implant Users
Single-channel modulation detection thresholds (MDTs) have been shown to predict cochlear implant (CI) users' speech performance. However, little is known about multi-channel modulation sensitivity. Two factors likely contribute to multichannel modulation sensitivity: multichannel loudness summation and the across-site variance in single-channel MDTs. In this study, single- and multi-channel MD...
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RATIONALE Previous cochlear implant (CI) studies have shown that single-channel amplitude modulation frequency discrimination (AMFD) can be improved when coherent modulation is delivered to additional channels. It is unclear whether the multi-channel advantage is due to increased loudness, multiple envelope representations, or to component channels with better temporal processing. Measuring env...
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ژورنال
عنوان ژورنال: Brazilian Journal of Otorhinolaryngology
سال: 2019
ISSN: 1808-8694
DOI: 10.1016/j.bjorl.2017.11.001