Anesthetics, LocalSoundSound LocalizationHeart SoundsAcoustic StimulationAuditory PerceptionAuditory PathwaysHearingInferior ColliculiEvoked Potentials, AuditoryAuditory CortexSound SpectrographyBlood VolumeAcousticsPlasma VolumeNoiseLung Volume MeasurementsStroke VolumePsychoacousticsRespiratory SoundsAuditory ThresholdHeart AuscultationAuscultationVocalization, AnimalErythrocyte Volume