Christov F, et al. - This study sought to present histology of the cochlear outer sulcus cells in normal human ears, presbycusis, and menière's disease. Researchers analyzed temporal bone specimens with normal hearing (n = 10), Menière's disease (n = 10), presbycusis with flat audiograms (n = 4), and presbycusis with sloping audiograms (n = 5) by light microscopy. In each cochlear turn, outer sulcus cells were measured quantitatively and qualitatively. The results of this study displayed that outer sulcus cells vary throughout the cochlear turns and associate with hearing status, but not in a manner specific to the underlying diagnoses of Menière's disease or presbycusis.