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Spatial Release From Masking in Bimodal and Bilateral Pediatric Cochlear Implant Recipients.
King, Kaylene; Dillon, Margaret T; O'Connell, Brendan P; Brown, Kevin D; Park, Lisa R.
Afiliación
  • King K; Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill.
  • Dillon MT; Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill.
  • O'Connell BP; Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill.
  • Brown KD; Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill.
  • Park LR; Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill.
Am J Audiol ; 30(1): 67-75, 2021 Mar 10.
Article en En | MEDLINE | ID: mdl-33259722
Purpose Traditional clinical measures of cochlear implant (CI) recipient performance may not fully evaluate the benefit of bimodal listening (hearing aid contralateral to a CI). The clinical assessment of spatial release from masking (SRM) may be a sensitive measure of the benefit of listening with bimodal stimulation. This study compared the SRM of pediatric bimodal and bilateral CI listeners using a clinically feasible method, and investigated variables that may contribute to speech recognition performance with spatially separated maskers. Method Forty pediatric bimodal (N = 20) and bilateral CI (N = 20) participants were assessed in their best aided listening condition on sentence recognition in a four-talker masker. Testing was completed with target and masker colocated at 0° azimuth, and with the masker directed at 90° to either ear. SRM was calculated as the difference in performance between the colocated and each 90° condition. A two-way mixed-methods analysis of variance was used to compare performance between groups in the three masker conditions. Multiple regression analyses were conducted to investigate potential predictors for SRM asymmetry including hearing history, unaided thresholds, word recognition, duration of device use, and acoustic bandwidth. Results Both groups demonstrated SRM, with significantly better recognition in each 90° condition as compared to the colocated condition. The groups did not differ significantly in SRM. The multiple regression analyses did not reveal any significant predictors of SRM asymmetry. Conclusions Bimodal and bilateral CI listeners demonstrated similar amounts of SRM. While no specific variables predicted SRM asymmetry in bimodal listeners, pediatric bimodal and bilateral CI recipients should expect similar amounts of SRM regardless of the side of the masker. SRM asymmetry in pediatric bimodal listeners may signal a need for consideration of a second CI.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Percepción del Habla / Implantes Cocleares / Implantación Coclear / Audífonos Tipo de estudio: Prognostic_studies Límite: Child / Humans Idioma: En Revista: Am J Audiol Asunto de la revista: AUDIOLOGIA Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Percepción del Habla / Implantes Cocleares / Implantación Coclear / Audífonos Tipo de estudio: Prognostic_studies Límite: Child / Humans Idioma: En Revista: Am J Audiol Asunto de la revista: AUDIOLOGIA Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos