| Sensitivity of bimodal listeners to interaural time differences with modulated single- and multiple-channel stimuli. | |
| | |
MedLine Citation:
|
PMID: 20571259 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
In a previous study, it was shown that users of a cochlear implant and a contralateral hearing aid are sensitive to interaural time differences (ITDs). In the current study, we investigated (1) the influence on ITD sensitivity of bilaterally varying the place of excitation in the cochlea and of modulation frequency, and (2) the sensitivity to ITD with a 3-channel stimulus generated using continuous-interleaved-sampling (CIS)-like processing. The stimuli were (1) a high-frequency carrier (acoustic sinusoid and single-electrode electric pulse train), modulated with a half-wave-rectified low-frequency sinusoid (a so-called transposed stimulus), and (2) a 3-channel stimulus, generated by sending an acoustic click train through processing similar to the CIS strategy. Four bimodal listeners were sensitive to ITD for both stimulus types. For the first stimulus type, there was no significant influence on ITD sensitivity of the acoustic carrier frequency. Performance decreased with increasing modulation frequency with a limit of sensitivity at around 150-200 Hz. Sensitivity was similar for the single- and 3-channel stimulus. The results indicate the possibility of ITD perception with adapted clinical processors, which can lead to improved sound source localization and binaural unmasking. |
| | |
Authors:
|
Tom Francart; Anneke Lenssen; Jan Wouters |
Related Documents
:
|
14698089 - Effects of reverberation on fusion of lead and lag noise burst stimuli. 1179219 - Binaural beats at high frequencies. 3774479 - Acuity of sound localisation: a topography of auditory space. iii. monaural hearing con... 16286699 - Human ocular torsion and perceived roll responses to linear acceleration. 8655799 - On the externalization of sound images. 11863159 - Discrimination of sound source velocity in human listeners. 18567259 - Enhancement of bistable perception associated with visual stimulus rivalry. 7123249 - The perception of biological motion by human infants. 21603929 - Armoured spiderman: morphological and behavioural adaptations of a specialised araneoph... |
Publication Detail:
|
Type: Journal Article Date: 2010-06-19 |
Journal Detail:
|
Title: Audiology & neuro-otology Volume: 16 ISSN: 1421-9700 ISO Abbreviation: Audiol. Neurootol. Publication Date: 2011 |
Date Detail:
|
Created Date: 2011-01-21 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9606930 Medline TA: Audiol Neurootol Country: Switzerland |
Other Details:
|
Languages: eng Pagination: 82-92 Citation Subset: IM |
Copyright Information:
|
Copyright © 2010 S. Karger AG, Basel. |
Affiliation:
|
ExpORL, Department of Neurosciences, Katholieke Universiteit Leuven, Leuven, Belgium. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Factors associated with incomplete insertion of electrodes in cochlear implant surgery: a histopatho...
Next Document: Perforated peptic ulcer disease: a review of history and treatment.