Cochlear ImplantationHearing Loss, BilateralCochlear ImplantsDeafnessHearing Loss, SensorineuralHearing LossRound Window, EarSpeech PerceptionAudiometry, Pure-ToneHearing TestsScala TympaniVestibulocochlear Nerve DiseasesLanguage DevelopmentTemporal BoneCorrection of Hearing ImpairmentPersons With Hearing ImpairmentsHearing Loss, CentralCHARGE SyndromeCochleaHearing Loss, UnilateralAuditory ThresholdAudiometry, Evoked ResponseAudiometrySpeechElectrodes, ImplantedCochlear NerveStapes SurgeryHearing AidsHearingEducation of Hearing DisabledEvoked Potentials, AuditorySpeech IntelligibilitySpiral GanglionConstitution and BylawsChloral HydrateVestibular DiseasesOtologic Surgical ProceduresAcoustic StimulationHearing Loss, SuddenLanguage TestsTreatment OutcomeOtosclerosisChild LanguageSpeech Discrimination TestsPostoperative PeriodAuditory CortexSound LocalizationEmbryo Implantation, DelayedTinnitusMeningitis, PneumococcalEvoked Potentials, Auditory, Brain Stem