PURPOSE: In this study, the authors sought to compare speech perception and localization in subjects who wear 1 cochlear implant (unilateral CI) or 1 cochlear implant and hearing aid (CI+HA) and then receive a second cochlear implant (bilateral CI), and to evaluate the importance of the duration between implant surgeries and duration of deafness. METHOD: Nine subjects were tested on speech perception in quiet, and 13 subjects were tested on speech perception and localization in noise using an array of 8 loudspeakers. All subjects were tested with unilateral CI prior to bilateral implantation and then again with bilateral CI after at least 3 months of bilateral experience. RESULTS: No significant difference was found between bilateral CI and unilateral CI on averaged speech perception in quiet performance. A significant benefit was found for bilateral CI on averaged speech perception in noise and on localization. Nonsignificant correlations were found for duration between surgeries, duration of deafness, and duration of bilateral use. CONCLUSIONS: Improvements for speech perception and localization played in background noise were indicated for most subjects after they received their 2nd implant. The correlations should be reassessed with a larger number of subjects to appropriately evaluate the effects of duration between surgeries, duration of deafness, and duration of bilateral use.
PURPOSE: In this study, the authors sought to compare speech perception and localization in subjects who wear 1 cochlear implant (unilateral CI) or 1 cochlear implant and hearing aid (CI+HA) and then receive a second cochlear implant (bilateral CI), and to evaluate the importance of the duration between implant surgeries and duration of deafness. METHOD: Nine subjects were tested on speech perception in quiet, and 13 subjects were tested on speech perception and localization in noise using an array of 8 loudspeakers. All subjects were tested with unilateral CI prior to bilateral implantation and then again with bilateral CI after at least 3 months of bilateral experience. RESULTS: No significant difference was found between bilateral CI and unilateral CI on averaged speech perception in quiet performance. A significant benefit was found for bilateral CI on averaged speech perception in noise and on localization. Nonsignificant correlations were found for duration between surgeries, duration of deafness, and duration of bilateral use. CONCLUSIONS: Improvements for speech perception and localization played in background noise were indicated for most subjects after they received their 2nd implant. The correlations should be reassessed with a larger number of subjects to appropriately evaluate the effects of duration between surgeries, duration of deafness, and duration of bilateral use.
Authors: Richard Ramsden; Paula Greenham; Martin O'Driscoll; Deborah Mawman; David Proops; Louise Craddock; Claire Fielden; John Graham; Leah Meerton; Carl Verschuur; Joseph Toner; Cecilia McAnallen; Jonathan Osborne; Maire Doran; Roger Gray; Margaret Pickerill Journal: Otol Neurotol Date: 2005-09 Impact factor: 2.311
Authors: Emily Buss; Harold C Pillsbury; Craig A Buchman; Carol H Pillsbury; Marcia S Clark; David S Haynes; Robert F Labadie; Susan Amberg; Peter S Roland; Pamela Kruger; Michael A Novak; Julie A Wirth; Jennifer M Black; Robert Peters; Jennifer Lake; P Ashley Wackym; Jill B Firszt; Blake S Wilson; Dewey T Lawson; Reinhold Schatzer; Patrick S C D'Haese; Amy L Barco Journal: Ear Hear Date: 2008-01 Impact factor: 3.570
Authors: Chad V Ruffin; Richard S Tyler; Shelley A Witt; Camille C Dunn; Bruce J Gantz; Jay T Rubinstein Journal: Laryngoscope Date: 2007-07 Impact factor: 3.325
Authors: Daniel M Zeitler; Megan A Kessler; Vitaly Terushkin; Thomas J Roland; Mario A Svirsky; Anil K Lalwani; Susan B Waltzman Journal: Otol Neurotol Date: 2008-04 Impact factor: 2.311