Hair Cells, Auditory, OuterSoundGene AmplificationSound LocalizationNucleic Acid Amplification TechniquesHeart SoundsSound SpectrographyAcoustic StimulationPolymerase Chain ReactionAuditory PerceptionAcousticsHearingBase SequenceIn Situ Hybridization, FluorescenceMolecular Sequence DataAuditory PathwaysAuditory CortexNoiseEvoked Potentials, Auditory