Cochlear DiseasesCochlear NerveVestibulocochlear NerveCochlear NucleusNerve FibersAuditory PathwaysEvoked Potentials, Auditory, Brain StemAuditory ThresholdAcoustic StimulationCochleaSpiral GanglionChinchillaDeafnessHair Cells, Auditory, InnerCochlear ImplantsSciatic NerveHearingVestibulocochlear Nerve DiseasesAuditory Diseases, CentralEvoked Potentials, AuditoryScala TympaniCatsBasilar MembraneCochlear Microphonic PotentialsPeripheral NervesPitch PerceptionNoiseOptic NerveLoudness PerceptionPsychoacousticsHair Cells, AuditoryInferior ColliculiElectric StimulationSound