title: Letter: Static acoustic impedance of the chinchilla middle ear: awake and sedated.
mesh_terms: D000758:Anesthesia; D000818:Animals; D001463:Barbiturates; D002682:Chinchilla / Q000502:physiology*; D004432:Ear, Middle / Q000187:drug effects / Q000502:physiology*; D006801:Humans; D013016:Sound
chemical_list: D001463:Barbiturates