Abstract
The histological findings and the results of experimental researches of the inner ear of the presbyacusic indicate the atrophy and degeneration of N. acusticus, spiral nervous cells and postganglionic nervous fibers, and the so-called degeneration of nervous epithel of cells in the cochlear duct. The author found always the figure of degeneration of nervous epithel, when endolymph sac was opened before the hearing organ was thrown into the fixing liquid and the endolymph was sucked and dried, with men, guinea pigs and rabbits. Therefore, the author states the need of re-investigation to decide whether this degeneration is related with the presbyacusis or not.
