Results 1 to 10 of about 24,638 (269)

Allometric and Phylogenetic Aspects of Stapes Morphology in Ruminantia (Mammalia, Artiodactyla)

Frontiers in Earth Science, 2020
The stapes is the smallest bone of the mammalian skeleton. Being the innermost middle ear ossicle, it is in contact with the inner ear and is directly responsible for sound transmission into it. Today, Ruminantia are one of the most diversified groups of
Bastien Mennecart, Coraline Guignard, Laura Dziomber, Georg Schulz, Georg Schulz, Bert Müller, Loïc Costeur   +6 more
doaj   +2 more sources

Evidence for high-frequency hearing in a Permian stem reptile [PDF]

Nature Communications
High-frequency hearing evolved in most amniote lineages in the Permian and Triassic. However, for reptiles, the evolutionary history of hearing is more elusive.
Kelsey M. Jenkins, Rachel C. Fleming, Juan D. Daza, Hans-Dieter Sues   +3 more
doaj   +2 more sources

New ophthalmosaurid ichthyosaurs from the European lower cretaceous demonstrate extensive ichthyosaur survival across the Jurassic–Cretaceous boundary [PDF]

, 2012
Background Ichthyosauria is a diverse clade of marine amniotes that spanned most of the Mesozoic. Until recently, most authors interpreted the fossil record as showing that three major extinction events affected this group during its history: one ...
A Sirotti, AM Kirton, AS Romer, B Choo, BP Kear, Brock Fenton, C Kolb, C McGowan, C McGowan, C McGowan, C McGowan, C McGowan, C McGowan, CW Andrews, CW Andrews, CW Gilmore, CW Gilmore, Darren Naish, DV Efimov, E Seibertz, EE Maxwell, EE Maxwell, EE Maxwell, EE Maxwell, EE Maxwell, F Broili, F Broili, F Lethiers, Fritz J. Krüger, G Baur, HG Seeley, JA Massare, Jeff Liston, Jessica Tainsh, Judith Pardo Pérez, JW Neale, JW Neale, K Nixon, M Fernández, M Fernández, M Fernández, M Foote, M Wade, M Wade, M Zammit, MA Woods, Michael W. Maisch, MS Arkhangelsky, MS Arkhangelsky, MS Arkhangelsky, MT Young, MT Young, MW Maisch, M–C Buchy, N Bardet, N Bardet, N Bardet, N Bardet, N Bardet, N Bardet, N Bardet, NC Arens, P Goloboff, PC Ensom, PF Rawson, PM Barrett, PM Hopson, PM Sander, PM Thorne, PS Druckenmiller, R Araújo, R Forrest, R Johnson, R Motani, R Motani, Ralf Kosma, RB Benson, RJ Butler, RM Appleby, Robert M. Appleby, RT Bakker, S Lindström, SE Peters, T Danelian, T Lingham-Soliar, Ulrich Joger, V Fischer, V Fischer, V Fischer, Valentin Fischer, VM Efimov, W Kiprijanoff   +91 more
core   +15 more sources

Revision Stapes Surgery [PDF]

Current Otorhinolaryngology Reports, 2022
AbstractPurpose of ReviewThis review briefly covers the history of stapedectomy, discusses the indications and problems encountered with revision surgery, and provides case examples with solutions.Recent FindingsRevision surgery is challenging and successful outcome even in the most experienced specialists is 45–71%, which is far less than that of ...
Hitomi Sakano, Jeffrey P. Harris
openaire   +4 more sources

Anatomical and morphometric study of goat middle ear ossicles (Capra aegagrus hircus)

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2021
The social and economic roles of goat farming in Northeastern Brazil, allied to the fact that the use of goat middle ear ossicles for research and human ear surgery training has not yet been proposed, justify the study of their applicability as an ...
A.C. Santos, A. Gradela, M.D. Faria
doaj   +1 more source

Endoscopic vs. microscopic stapes surgery: An anatomical feasibility study

Frontiers in Surgery, 2022
ObjectivesTo investigate the feasibility of the endoscopic approach vs. microscopic approach during stapes surgery, focusing on the visualization of the important anatomical structures of the middle ear, the volume of the resected scutum and chorda ...
Esther E. Blijleven, Esther E. Blijleven, Koen Willemsen, Ronald L. A. W. Bleys, Robert J. Stokroos, Robert J. Stokroos, Inge Wegner, Henricus G. X. M. Thomeer, Henricus G. X. M. Thomeer   +8 more
doaj   +1 more source

Congenital Stapes Anomalies with Normal Eardrum [PDF]

Clinical and Experimental Otorhinolaryngology, 2009
ObjectivesA non-progressive and conductive hearing loss with normal eardrum, but no history of trauma and infection, is highly suggestive of a congenital ossicular malformation. Among ossicular anomalies, stapes anomaly is the most common. The purpose of
Hun Yi Park, Dong Hee Han, Jong Bin Lee, Nam Soo Han, Yun-Hoon Choung, Keehyun Park   +5 more
doaj   +1 more source

The Stapes of Gomphodont Cynodonts: Insights into the Middle Ear Structure of Non-Mammaliaform Cynodonts. [PDF]

PLoS ONE, 2015
The stapes is known in several non-mammaliaform cynodonts, although it has only been cursorily studied. Here we thoroughly analyze the stapedial anatomy of several basal cynodonts in a phylogenetic framework. Our study shows that the stapedial anatomy is
Leandro C Gaetano, Fernando Abdala
doaj   +1 more source

The use of a SQUID magnetometer for middle ear research [PDF]

, 1982
A new technique is described for the measurement of vibrations in the temporal bones of an isolated middle ear. The precise recording of vibrations in the middle ear is of importance for the construction and improvement of a middle ear prosthesis.1 The ...
Brenkman, C.J., Grote, J.J., Marel, L.C. van der, Mol, H., Peters, M.J., Rutten, W.L.C.   +5 more
core   +10 more sources

Congenital absence of the stapes and oval window with malpositioned facial nerve and anomalous eustachian tube.

Revista Portuguesa Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, 2019
Introduction: Since in 1995 the first case of absence of stapes was described, several cases were reported. However, its etiology remains unknown. Some authors suggest a genetic cause, without excluding the possibility of embryopathy due to infections ...
Mercedes Álvarez-Buylla Blanco, Miguel Álvarez-Buylla Camino   +1 more
doaj   +1 more source