Search for dissertations about: "low-frequency hearing loss"

Showing result 6 - 10 of 10 swedish dissertations containing the words low-frequency hearing loss.

  2. 6. Signal processing approaches on otoacoustic emissions

    Author : Jun Cheng; Karolinska Institutet; Karolinska Institutet; []
    Keywords : otoacoustic emissions; signal processing; time-frequency representation; cochlea; outer hair cell; neonatal hearing screening; basilar membrane nonlinearity; bounce phenomenon; spectral estimation; interrelations of OAEs;

    Abstract : The recent achievement on the measurement of otoacoustic emissions (OAEs) is based on a novel technical development of digital signal processing. OAEs measured in the external ear canal are normal by-products of the active process in hearing, which was discovered by Kemp (1978). READ MORE

  4. 7. A New Audiometric Bone Vibrator, Radioear B81, and the Bone Conduction Implant with Emphasis on Magnetic Resonance Imaging

    Author : Karl-Johan Fredén Jansson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; image artifact; magnetically induced torque; balanced electromagnetic separation transducer; magnetic resonance imaging.; bone vibrator; bone conduction; retention magnet; demagnetization;

    Abstract : Hearing by air conduction (AC) and bone conduction (BC) are attributed to be the natural ways of stimulating the cochlea. With AC hearing, the cochlea is stimulated by air pressure variations via the ear canal, whereas with BC hearing, sound vibrations are transmitted thru the skull bone to the cochlea. READ MORE

  5. 8. Post-Dural Puncture Headache in Obstetrics : Audiological, Clinical and Epidemiological studies

    Author : Bijan Darvish; Anil Gupta; Lars Irestedt; Gunnar Dahlgren; Sigridur Kalman; Örebro universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Accidental dural puncture; post-dural puncture headache; epidural blood patch; obstetrics; Anestesiologi; Anaesthesiology; Kirurgi; Surgery;

    Abstract : Post-dural puncture headache (PDPH) is the most common complication of obstetric epidural analgesia. The characteristic positional headache, often associated with visual, vestibular or cochlear symptoms, is severe and disabling for the parturient. The diagnosis is clinical without the possibility of confirmatory objective tests. READ MORE

  6. 9. Positional Cloning of Disease Causing Genes : A Genetic Study of Obesity, Ichthyosis Prematurity Syndrome and Meniere's Disease

    Author : Joakim Klar; Niklas Dahl; Catharina Larsson; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; Positional cloning; Obesity; Ichthyosis; Meniere’s disease; RORa; PIK3C2G; Genetik; Clinical genetics; Klinisk genetik;

    Abstract : Positional cloning is a method to identify genes from their position in the genome without prior knowledge about function. We used this approach to investigate the basis for three distinct genetic disorders; Obesity, Ichthyosis Prematurity Syndrome and Meniere's disease. READ MORE

  7. 10. Development of vestibular evoked myogenic potentials and audiometry for the clinical diagnosis of superior canal dehiscence syndrome

    Author : Luca Verrecchia; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Often in Audiology and Neurotology the focus is on disorders characterized by loss of hearing and vestibular function. A complementary approach is to look at the manifestations of abnormally augmented auditory or vestibular functions, commonly named auditory and vestibular hypersensitivity. READ MORE