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The surfaces of the maculae and cristae from 3\u2010, 12\u2010, and 24\u2010month\u2010old Fischer 344 rats were observed by use of scanning electron microscopy. Age\u2010related changes in the morphology of the vestibular neuroepithelium included a substantial loss of hair cells, as well as a reduction in the number of kinocllia and stereocilla on those that remained. These changes were greatest in the central upper regions of the three ampullae. In aged animals a greater area of the neuroepithelial surface was covered with microvilli, and in some instances, giant cilia were found among the microvillous surfaces. In contrast, there were few differences among the three age groups in the number and condition of hair cells in the saccules and utricles. The changes observed in the cristae may contribute to the age\u2010associated impairment of vestibular function. 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