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Recent Advances In Otoacoustic Emissions
Published in Stavros Hatzopoulos, Andrea Ciorba, Mark Krumm, Advances in Audiology and Hearing Science, 2020
The association between OAEs, pure-tone thresholds and self-reported hearing disability was studied in 4202 adults examined with air conduction pure-tone audiometry, TEOAE, DPOAE, and self-report items regarding hearing disability (Engdahl et al., 2013). Pure tone average hearing thresholds generally predicted self-reported hearing slightly better than did the OAE measures. OAEs were shown to be a valid measure of self-reported hearing disability the general population but added no additional information to pure-tone hearing thresholds. Self-reported hearing-related symptoms among personnel exposed to moderately high-occupational noise levels were compared with pure-tone audiometry, DPOAEs, and hearing in noise test (Fredriksson et al., 2016). The questionnaire item assessing sound-induced auditory fatigue had the best combination of sensitivity ≥85% (95% CI, 56–100%) and specificity ≥70% (95% CI, 55–84%) for hearing disorder diagnosed by audiometry or otoacoustic emissions. Of those reporting sound-induced auditory fatigue 71% were predicted to have a disorder diagnosed by otoacoustic emissions. Participants reporting any hearing-related symptom had slightly worse measured hearing.
Symptoms of Neurological Disease
Published in John W. Scadding, Nicholas A. Losseff, Clinical Neurology, 2011
Tim Fowler, Nick Losseff, John Scadding
Acute peripheral lesions causing vertigo also commonly cause intense nausea, vomiting, sweating and prostration. Because of the proximity of auditory to vestibular fibres in the eighth cranial nerve, deafness sometimes accompanies the vertigo. Conductive deafness due to middle ear disease suggests a peripheral lesion, but perceptive deafness due to damage to the cochlear end-organ or vestibular nerve may be due to peripheral or central lesions. If peripheral, perceptive deafness is often less severe with loud sounds (loudness recruitment), and also causes severe speech distortion. Central lesions of the eighth nerve rarely show loudness recruitment, but exhibit auditory fatigue in that the intensity of sound has to be increased progressively to maintain a constant noise level. Vertigo due to vestibular damage is also often accompanied by nystagmus, a to-and-fro movement of the eyes due to interrupted visual fixation. Different patterns of nystagmus will be described later.
Adam Politzer (1835-1920) and the cochlear nucleus
Published in Journal of the History of the Neurosciences, 2021
Albert Mudry, John Riddington Young
After this historic first implantation operation, it became clear that electrical stimulation of the cochlear nuclei had exciting new possibilities for patients with total bilateral cochlear nerve loss. Two years later, in 1981, House replaced the implanted electrode with a surface electrode. This had become necessary because, after two months of stimulation, patients had started to show signs of severe auditory fatigue, which made continued stimulation impossible. It was thought this was due to the implanted electrode migrating deeper into the brain stem (Hitselberger, House, and Edgerton 1984). After another two years, the auditory acuity was comparable with that of a patient with a cochlear implant. In 1984, a colleague of House wrote, “Our experience with this first patient using a cochlear nucleus implant has encouraged us to improve electrode design for long-term stimulation, and to continue to evaluate the clinical benefit of cochlear nucleus stimulation for rehabilitation of the deaf” (Hitselberger, House, and Edgerton 1984, 54).
Occupational health issues experienced by UK embryologists: informing improvements in clinical reproductive science practice
Published in Human Fertility, 2022
Helen Priddle, Sarah Pickup, Catherine Hayes
Eight survey respondents reported auditory problems (3.6%) and most attributed this to noise from flow hoods. In the UK working population 2% experienced tinnitus and/or hearing loss. The incidence was greater with age and exposure to high levels of noise (Palmer et al., 2002). Studies demonstrate noise-induced hearing loss (NIHL) in industrial settings (Pelegrin et al., 2015), but limited research explores comparable environments. One study in obstetrics (Fredriksson et al., 2015) found noise levels were high and associated with tinnitus and auditory fatigue symptoms.
Evaluation of a novel bimodal fitting formula in Advanced Bionics cochlear implant recipients
Published in Cochlear Implants International, 2020
Sarah E. Warren, M. Noelle Dunbar, Cassandra Bosworth, Smita Agrawal
A limitation of the current study is the small sample size and short-term results with the APDB. In addition, the users did not complete a trial using the study hearing aid programed with the NAL-NL2 formula. Future directions could include outcome measures related to real-world listening scenarios and auditory fatigue.