Sökning: "inner ear pressure"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden inner ear pressure.

  1. 1. Influence of middle ear pressure changes on labyrinthine hydrodynamics and hearing physiology

    Författare :Konrad Konradsson; Lund näs- och halssjukdomar Öron-; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; auditive system and speech; audiology; Pressure; Audiometry; Cats; Animal; Cochlea; Cochlear aqueduct; Ear; Eustachian tube; Hearing; Otorinolaryngologi; Human; Labyrinth; Otorhinolaryngology; Meniere s disease; audiologi; hörsel- och talorganen;

    Sammanfattning : Results from experimental studies, as well as clinical studies, are used to elucidate the effects of ambient pressure changes on cochlear hydrodynamics and function. The perilymph pressure changes and the pressure release effects of the cochlear aqueduct (CA) and Eustachian tube (ET) in cats exposed to hypobaric pressure are elucidated. LÄS MER

  3. 2. Middle ear mechanics : using temporal bone experiments to improve clinical methods

    Författare :Anton Rönnblom; Krister Tano; Magnus Von Unge; Mimmi Werner; Måns Eeg-Olofsson; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Middle ear; conductive hearing loss; ossiculoplasty; human temporal bone; Laser doppler vibrometry; malleus fracture; middle ear muscles; muscle fiber composition; Oto-Rhino-Laryngology; oto-rhino-laryngologi;

    Sammanfattning : BackgroundThe middle ear transmits and amplifies sound vibrations from the tympanic membrane via three ossicles to the inner ear. Moreover, it contains two muscles, the stapedius muscle (SM) which protects the inner ear from loud noise, and the tensor tympani (TT) whose function is still debated. LÄS MER

  4. 3. On Pressure Regulation of the Middle Ear

    Författare :Marianne Brattmo; allergi och livskvalitet Laryngoesofagologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Chronic otitis media; Sniffing behaviour; Tubal opening; gas diffusion; Meniere s disease; Attic cholesteatoma; Chronic central perforation; Tympanic membrane; Continuous measurement; Middle ear pressure; Eustachian tube;

    Sammanfattning : The middle ear (ME) pressure is regulated by gas diffusion over the ME mucosa and pressure equalizations via the Eustachian tube (ET). Disturbance in the regulation of ME pressure is believed to contribute to the development of chronic ear diseases. LÄS MER

  5. 4. Pitch, loudness and frequency selectivity in low-frequency hearing loss

    Författare :Jonas Brännström; Lund näs- och halssjukdomar Öron-; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; frequency coding; Cochlea; frequency selectivity; hearing fluctuation; inner ear pressure; long-term measurement; Ménière s disease; low-frequency hearing loss; loudness; pitch.;

    Sammanfattning : Patients with Ménière's disease and cochlear hydrops show fluctuating low-frequency hearing loss (FLFHL). At present these changes are followed as patients' subjective reports and occasional measurements. LÄS MER

  7. 5. Fibroblast Contractility in vivo and in vitro : Effects of Prostaglandins and Potential Role for Inner Ear Fluid Homeostasis

    Författare :Anna-Karin Hultgård Ekwall; Kristofer Rubin; Helge Rask-Andersen; Bengt Rippe; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Interstitial connective tissue; fibroblasts; prostaglandins; podoplanin; endolymph resorption; Ménière’s disease.; Biokemi; Biochemistry; Biokemi;

    Sammanfattning : Fibroblasts continuously strive to organize and compact the surrounding extracellular matrix (ECM). Recent data suggest that this cellular contractility controls interstitial fluid homeostasis in loose connective tissues (CT). LÄS MER