title: Forehead versus mastoid threshold differences with a circular tipped vibrator.
mesh_terms: D000328:Adult; D001301:Audiometry, Pure-Tone / Q000379:methods; D001309:Auditory Threshold; D001844:Bone Conduction; D005624:Frontal Bone / Q000502:physiology*; D006801:Humans; D008416:Mastoid / Q000502:physiology*