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In a quantitative model, the translational admittance is compliant while the rotational admittance is second order. Best-fit model parameters are consistent with estimates based on anatomy and predict that fluid flow across hair bundles is a primary source of viscous damping. The model predicts that the rotational mode contributes to the high-frequency slopes of auditory nerve fiber tuning curves, providing a physical explanation for a low-pass filter required in models of this cochlea. The combination of modes makes the sensitivity of hair bundles more uniform with radial position than that which would result from pure rotation. A mechanical analogy with the organ of Corti suggests that these two modes of motion may also be present in the mammalian cochlea.<\/jats:p>","DOI":"10.1121\/1.1993147","type":"journal-article","created":{"date-parts":[[2005,9,12]],"date-time":"2005-09-12T20:32:37Z","timestamp":1126557157000},"page":"1585-1592","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":10,"title":["Two modes of motion of the alligator lizard cochlea: Measurements and model predictions"],"prefix":"10.1121","volume":"118","author":[{"given":"A. 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