VertigoInvertebratesMeniere DiseaseDizzinessNystagmus, PathologicVestibular NeuronitisSemicircular CanalsVestibular DiseasesVestibular Function TestsNystagmus, PhysiologicBetahistineCaloric TestsElectronystagmographyLabyrinthitisLabyrinth DiseasesEar DiseasesPatient PositioningPhylogenyVertebratesOtolithic MembraneSpecies SpecificityLabyrinthine FluidsMolecular Sequence DataVertebrobasilar InsufficiencyCerebellar Diseases