CochleaHair Cells, AuditoryOrgan of CortiSpiral GanglionHair Cells, Auditory, InnerHair Cells, Auditory, OuterCochlear DiseasesSpiral Ligament of CochleaHearingEar, InnerEvoked Potentials, Auditory, Brain StemLabyrinth Supporting CellsCochlear NerveStria VascularisRound Window, EarCochlear Microphonic PotentialsDeafnessPerilymphEndolymphStapesOtoacoustic Emissions, SpontaneousTectorial MembraneScala TympaniHearing LossHearing Loss, Noise-InducedNerve FibersAuditory ThresholdCochlear DuctGuinea PigsTemporal BoneChinchillaDenervationNeurons, EfferentAdrenergic FibersAcoustic StimulationHearing Loss, SensorineuralAxonsGerbillinaeSympathetic Nervous SystemParasympathetic Nervous SystemNeurons, AfferentAnimals, NewbornCochlear ImplantationEfferent PathwaysVestibulocochlear NerveElectric StimulationVestibule, LabyrinthAuditory PathwaysNeuronsImmunohistochemistryTympanic MembraneNoiseCochlear ImplantsMotor NeuronsEar, MiddleCochlear NucleusEar CanalMuscle DenervationNeurotrophin 3PresbycusisUbiquitin ThiolesteraseLabyrinthine FluidsTyrosine 3-MonooxygenaseCholinergic FibersSynapsesNerve RegenerationEvoked Potentials, AuditorySoundEndolymphatic HydropsAfferent PathwaysAutonomic Fibers, PreganglionicMusclesSaccule and UtricleNerve EndingsVasoactive Intestinal PeptideEarSensory Receptor CellsVesicular Acetylcholine Transport ProteinsSympathetic Fibers, PostganglionicAutonomic PathwaysSweat GlandsPetrous BoneOtologic Surgical ProceduresNeuromuscular JunctionMechanotransduction, CellularMice, Inbred CBANerve Growth FactorsEar OssiclesOlivary NucleusLabyrinth DiseasesAcetylcholinesteraseCatsCalcitonin Gene-Related PeptideAction PotentialsCholine O-AcetyltransferaseVagus NerveRats, Sprague-DawleyHistocytochemistryGene Expression Regulation, Developmental3-Iodobenzylguanidine