title: Simultaneous bilateral cochlear implantation: prospective study in adults.
abstract: Normal-hearing listeners gain important everyday benefits from having two ears, particularly for determining where sounds come from and for understanding speech in noisy environments. Users of two cochlear implants may have the opportunity to experience some of these bilateral advantages. The primary aim of this study was to document bilateral versus unilateral listening benefit in 15 postlinguistically deafened adults implanted simultaneously with two Harmony(®) (HiRes 90K(®)) cochlear implants. Speech perception (in quiet and in noise) and localization accuracy were assessed for each ear alone and both ears together. Subjects showed improved sound localization and better speech perception in quiet and in noise when using two implants compared with using one implant alone.
authors.affiliation: House Ear Institute, Los Angeles, California, United States.
authors.forename: Dawn Burton
authors.initials: DB
authors.lastname: Koch
authors.forename: Sigfrid D
authors.initials: SD
authors.lastname: Soli
authors.forename: Mark
authors.initials: M
authors.lastname: Downing
authors.forename: Mary Joe
authors.initials: MJ
authors.lastname: Osberger
mesh_terms: D000328:Adult; D000368:Aged; D019929:Cochlear Implantation / Q000379:methods*; D018592:Cross-Over Studies; D003638:Deafness / Q000523:psychology / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D009622:Noise; D011446:Prospective Studies; D013017:Sound Localization; D013067:Speech Perception