Results 71 to 80 of about 1,989,151 (320)

Graft thickness assessment for surgery of retraction pocket of the middle ear based on finiteele ment analysis of eigenfrequencies of the eardrum oscillating system

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2018
The aim of this study is to formulate recommendations for surgery of retraction pocket of the tympanic membrane and improving of hearing. Finite-element analysis of the eigenfrequencies of the oscillatory systems for normal middle ear, middle ear with ...
Gennadi I. Mikhasev   +5 more
doaj  

Use of porcine small intestinal submucosa for pediatric endoscopic tympanic membrane repair

open access: yesWorld Journal of Otorhinolaryngology-Head and Neck Surgery, 2017
Tympanic membrane perforationsoccur frequently in children, and can result in hearing loss, otorrhea, pain, and cholesteatoma. Due to the narrower ear canal in children, a postauricular incision is often needed to access the tympanic membrane for ...
Razan A. Basonbul, Michael S. Cohen
doaj   +1 more source

Ultrastructural alterations of the tympanic membrane in retraction pockets from patients with chronic otitis media

open access: yesPolish Journal of Pathology, 2021
Chronic otitis media with a retraction pocket is one of the forms of chronic otitis media that predisposes to cholesteatoma. The aim of our study was to determine the extent and type of changes in the tympanic membrane fragments which were surgically ...
Dmitry Tretiakow   +2 more
doaj   +1 more source

Endoscopic optical coherence tomography with wide field-of-view for the morphological and functional assessment of the human tympanic membrane

open access: yesJournal of Biomedical Optics, 2018
. An endoscopic optical coherence tomography (OCT) system with a wide field-of-view of 8 mm is presented, which combines the image capability of endoscopic imaging at the middle ear with the advantages of functional OCT imaging, allowing a morphological ...
L. Kirsten   +11 more
semanticscholar   +1 more source

Contralateral inhibition of click- and chirp-evoked human compound action potentials [PDF]

open access: yes, 2017
Cochlear outer hair cells (OHC) receive direct efferent feedback from the caudal auditory brainstem via the medial olivocochlear (MOC) bundle. This circuit provides the neural substrate for the MOC reflex, which inhibits cochlear amplifier gain and is ...
Cone, Barbara K   +2 more
core   +2 more sources

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

open access: yesThe Anatomical Record, EarlyView.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

Endoscopic stapedectomy our experience [PDF]

open access: yes, 2012
Stapedecomy traditionally is performed using operating microscope. Eventhough it is a time tested procedure, it had its own draw backs. In patients with excessive bony overhang it would bedifficult to access the middle ear cavity using operating ...
Thiagarajan, Balasubramanian   +1 more
core   +3 more sources

Intraspecific variation of cochlear morphology in bowhead and beluga whales

open access: yesThe Anatomical Record, EarlyView.
Abstract The bony labyrinth of the petrosal bone, a distinctive feature of mammal skulls, is often identified in micro‐computed tomography imaging to infer species' physiological and ecological traits. When done as part of a comparative study, one individual specimen is normally considered representative of a species, and intraspecific variation is ...
John Peacock, J. G. M. Thewissen
wiley   +1 more source

The endocannabinoid/cannabinoid receptor 2 system protects against cisplatin-induced hearing loss [PDF]

open access: yes, 2018
Previous studies have demonstrated the presence of cannabinoid 2 receptor (CB2R) in the rat cochlea which was induced by cisplatin. In an organ of Corti-derived cell culture model, it was also shown that an agonist of the CB2R protected these cells ...
Asmita Dhukhwa   +8 more
core   +4 more sources

A Novel, Contactless, Portable “Spot-Check” Device Accurately Measures Respiratory Rate [PDF]

open access: yes, 2020
Respiratory rate (RR) is an important vital sign used in the assessment of acutely ill patients. It is also used as to predict serious deterioration in a patient's clinical condition.
Burke, Derek   +9 more
core   +2 more sources

Home - About - Disclaimer - Privacy