Binaurally-coherent jitter improves neural and perceptual ITD sensitivity in normal and electric hearing
نویسندگان
چکیده
normal and electric hearing M. Goupell ([email protected]), K. Hancock ([email protected]), P. Majdak ([email protected]), B. Laback ([email protected]), B. Delgutte ([email protected]) 1 Acoustics Research Institute, Austrian Academy of Sciences, Wohllebengasse 12-14, A-1040 Vienna, Austria 2 Eaton-Peabody Laboratory, Massachusetts Eye & Ear Infirmary, Boston, MA 02114 3 Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139
منابع مشابه
Binaural jitter improves interaural time-difference sensitivity of cochlear implantees at high pulse rates.
Interaural time difference (ITD) arises whenever a sound outside of the median plane arrives at the two ears. There is evidence that ITD in the rapidly varying fine structure of a sound is most important for sound localization and for understanding speech in noise. Cochlear implants (CIs), neural prosthetic devices that restore hearing in the profoundly deaf, are increasingly implanted to both ...
متن کاملNeural ITD coding with bilateral cochlear implants: effect of binaurally coherent jitter.
Poor sensitivity to the interaural time difference (ITD) constrains the ability of human bilateral cochlear implant users to listen in everyday noisy acoustic environments. ITD sensitivity to periodic pulse trains degrades sharply with increasing pulse rate but can be restored at high pulse rates by jittering the interpulse intervals in a binaurally coherent manner (Laback and Majdak. Binaural ...
متن کاملNeural basis of improved ITD sensitivity with jitter.
IN EVERYDAY LIFE SITUATIONS, interaural time differences (ITDs) provide essential information to the auditory system to determine the lateral position of a sound source and to understand speech embedded in interfering noise. Users of most current bilateral cochlear implants (CIs) have only very limited access to ITDs, thus limiting their performance in these tasks. Although ITD can be encoded i...
متن کاملBinaural jitter with cochlear implants, improved interaural time-delay sensitivity, and normal hearing.
Laback and Majdak (1) recently showed that interaural timedelay (ITD) sensitivity in bilateral cochlear implant (BiCI) users can be improved at high rates by diotic randomization of the electrical pulse timing. They ascribed their result to ‘‘restarting’’ of the binaurally adapted auditory system. However, an alternative explanation is that randomizing electrical pulse rate introduced low-rate ...
متن کاملLateralization of Sounds Based on Interaural Time Differences in Cochlear Implant Listeners
Interaural time differences (ITD) occur when a binaural signal is delayed at one ear. They arise when a sound is presented outside of the median plane of a subject. In modulated sounds like speech, ITD is present in both the rapidly varying fine structure and the slowly varying envelope. There is evidence that ITD in the fine structure of a sound is most important for sound localization and for...
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تاریخ انتشار 2009