Hair Cells, AuditoryCochleaHair Cells, Auditory, InnerHair Cells, Auditory, OuterHairHair Cells, VestibularOrgan of CortiStereociliaSaccule and UtricleEvoked Potentials, Auditory, Brain StemEar, InnerMechanotransduction, CellularStria VascularisHair FollicleHearingSpiral GanglionHearing LossTranscription Factor Brn-3CDeafnessPerilymphTurtlesCiliaOtoacoustic Emissions, SpontaneousCochlear Microphonic PotentialsHearing Loss, Noise-InducedPresbycusisMicroscopy, Electron, ScanningHair Cells, AmpullaNeurons, EfferentHair ColorUsher SyndromesAnimals, NewbornGentamicinsHair DiseasesLateral Line SystemMechanoreceptorsAcoustic StimulationHearing Loss, SensorineuralGuinea PigsAuditory ThresholdChickensMembrane PotentialsHair RemovalHair DyesLarge-Conductance Calcium-Activated Potassium ChannelsOrgan Culture TechniquesHair PreparationsNoiseMice, KnockoutAcoustic MaculaeMice, Mutant StrainsPatch-Clamp TechniquesElectric CapacitanceGene Expression Regulation, Developmental