Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Scala tympani"”.
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Effect of cochlear shape and size on cochlear implant insertion forces
… technologies in creating full cochlea and *scala tympani* models. The most accurate and transparent models were achieved using DLP technology with a 30 μm layer height combined with an acrylic coating. This provides a promising pathway for creating detailed artificial cochlea models for use …
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Untersuchung der cochleären Mikromorphologie und des Querschnitts der cochleären Gänge unter Berücksichtigung der Entstehung von Insertionsschäden bei der Cochlea-Elektroden-Insertion
… and the internal dimensions of the cochlear scalae were measured with computer software that was developed for this study. These data were evaluated in reference to the cochlear spiral that was reconstructed for every cochlea according to the “graphical cochlea reconstruction”-method. …
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Sound-induced micromechanical motions in an isolated cochlea preparation
… of a Petri dish at an angle. The bone above scala vestibuli of one half of the apical turn is removed to allow optical imaging with a 40x, 0.8 NA water-immersion objective. Reissner's membrane is left intact. Illumination is provided with a blue LED coupled to an optical fiber. The fiber is …
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Hearing loss in experimental bacterial meningitis
… CFU S.pneumoniae D39 directly into the scala tympani of guinea pigs also resulted in electrophysiological and ultrastructural damage to the organ of Corti that could be diminished by pretreatment with antibiotics. The data confirm the cochlea as the site of meningogenic deafness. They …
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Role of middle-ear inertial component of bone conduction in chinchilla
… After middle ear interruption, pressures in scala vestibuli Psv and scala tympani PST drop by as much as 40 dB in AC, but only decrease in Psv by 10 dB, with almost no change in PST in BC. The difference in the change of both Psv and PST in BC compared to AC suggest the main mechanisms that …
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Evidence of inner-ear mechanisms in bone conduction in chinchillas
… Results of stapes fixation show a decrease in scala vestibuli sound pressure Psv and little change in scala tympani sound pressure PST in bone conduction. Ear canal occlusion produces an increase in ear canal sound pressure PEC with a similar amount of increase in Psv, but almost no change in …
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ANIMAL MODELS FOR BEHAVIORAL CHANGES OR HEARING LOSS UPON ACUTE VIRUS INFECTIONS
… in the spiral ganglion, organ of corti, and scala tympani. This same damage was not observed in IFNabgR-/- mice although those mice developed systemic infection with higher virus loads in most tissues. This indicates that the damage to the cochlear nerve is at least partially driven through …
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Pathophysiologie des Hörschadens bei experimenteller Pneumokokkenmeninigitis
… Perilymphräume, die in der basalen Windung der Scala tympani akzentuiert war. Neben der eitrigen Entzündung konnte erstmals auch eine Störung der Blut-Labyrinth-Schranke identifiziert werden, die in der Akutphase der Erkrankung sehr stark mit dem Hörschaden korrelierte. Die immunhistochemisch …