Apical displacement of the traveling wave.
D003051:Cochlea / Q000502:physiology*; D007758:Ear, Inner / Q000502:physiology*; D004548:Elasticity; D006801:Humans; D008433:Mathematics; D008567:Membranes, Artificial; D008722:Methods; D008961:Models, Structural; D055585:Physical Phenomena; D010825:Physics; D012408:Rubber; D013016:Sound
D008567:Membranes, Artificial; D012408:Rubber