FIG. 6.

Reattachment the cupula. A Step mechanical indentation stimulus generating a pulse of endolymph flow toward the ampulla and transcupular pressure. B Displacement of the cupula when damaged (a) showing rapid adaptation followed by a maintained offset position. After ∼6 h, the cupula recovered and exhibited the normal slow adaptation (b, c) associated with the elasticity of the cupula slowly pushing the endolymph back into the canal duct (τ ∼ 27 s). C Expanded view for the damaged cupula showing immediate deflection of the cupula followed by rapid adaptation as endolymph flowed over its apex. Cupula adaptation was τ ∼ 300 ms in this case.