Full-array channel discrimination in cochlear implants: validation and clinical application.
We sought to validate our proposed tool for estimating channel discrimination of cochlear implant (CI) users along the full electrode array and to assess associations between place-pitch discrimination and speech perception. In two tests, participants identified one stimulus (probe) as the odd-one-o...
| Publicado en: | International Journal of Audiology Vol. 62; no. 10; pp. 992 - 1002 |
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| Autores principales: | , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Oct2023
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=172955508&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 172955508 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14992027 JW2 jtl: International Journal of Audiology issn: 14992027 maglogo: Y pubinfo: dt: Oct2023 vid: 62 iid: 10 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 172955508 172955508 172955508 10.1080/14992027.2022.2101028 172955508 ppf: 992 ppct: 10 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Full-array channel discrimination in cochlear implants: validation and clinical application. aug: au: Windmeijer, Coen A. A. Biesheuvel, Jan Dirk Boermans, Peter-Paul B. M. Briaire, Jeroen J. Frijns, Johan H. M. affil: ENT Department, Leiden University Medical Centre, Leiden, The Netherlands sug: subj: Cochlear Implant Psychophysics Speech Discrimination Tests Speech Perception Human Male Female Adult Adolescence Consonants Phonetics Pitch Perception Evaluation Vowels Electrodes Comparative Studies Electric Stimulation Coefficient alpha Psychometrics Evaluation Descriptive Statistics T-Tests Mann-Whitney U Test Spearman's Rank Correlation Coefficient Linear Regression Adult: 19-44 years Adolescent: 13-18 years Male Female ab: We sought to validate our proposed tool for estimating channel discrimination of cochlear implant (CI) users along the full electrode array and to assess associations between place-pitch discrimination and speech perception. In two tests, participants identified one stimulus (probe) as the odd-one-out compared with two reference stimuli. Probe stimuli were evoked using dual electrode stimulation characterised by the current steering coefficient α. The first test measured psychometric functions (PFs) on pre-defined contacts, with just a noticeable difference (JNDα) as the outcome variable. The second test estimated channel discrimination on the full electrode array, yielding a discrimination score of Dα. We measured speech perception as free-field consonant-vowel-consonant phoneme recognition scores. We included 25 adults with at least 6 months of CI experience. JNDα and Dα scores measured on the same contact correlated significantly (rs = 0.64, p < 0.001). Mean JNDα and speech perception scores showed significant relationships in quiet and in noise. Dα correlated strongly with JNDα scores obtained with the PFs. For poor performers, the full-array test may underestimate JNDα. The full-array pitch discrimination test could be a helpful clinical tool, such as for fitting regions of lesser pitch discrimination ability. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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