Results 41 to 50 of about 8,050 (212)

Complex nystagmus in traumatic benign paroxysmal positional vertigo: A case study on the critical value of knowing semicircular canal excitation and inhibition patterns

Journal of Otology, 2021
A 73-year-old female presented to the emergency department with chief complaint of dizziness after sustaining a fall one month prior to dizziness onset.
Allison Nogi, Michael C. Schubert
doaj   +1 more source

The video Head Impulse Test (vHIT) detects vertical semicircular canal dysfunction. [PDF]

PLoS ONE, 2013
BACKGROUND: The video head impulse test (vHIT) is a useful clinical tool to detect semicircular canal dysfunction. However vHIT has hitherto been limited to measurement of horizontal canals, while scleral search coils have been the only accepted method ...
Hamish Gavin Macdougall, Leigh Andrew McGarvie, Gabor Michael Halmagyi, Ian Stewart Curthoys, Konrad Peter Weber   +4 more
doaj   +1 more source

The braincase of Malawisaurus dixeyi (Sauropoda: Titanosauria): A 3D reconstruction of the brain endocast and inner ear.

PLoS ONE, 2019
A braincase of the Cretaceous titanosaurian sauropod Malawisaurus dixeyi, complete except for the olfactory region, was CT scanned and a 3D rendering of the endocast and inner ear was generated. Cranial nerves appear in the same configuration as in other
Kate A Andrzejewski, Michael J Polcyn, Dale A Winkler, Elizabeth Gomani Chindebvu, Louis L Jacobs   +4 more
doaj   +1 more source

Spectrum of Congenital Anomalies in Myhre Syndrome—Insights Into Effects Brought by Altered TGF‐β Signaling via Gain‐of‐Function Variants in SMAD4

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Myhre syndrome is a rare genetic disorder characterized by progressive multisystem involvement. Gain‐of‐function missense heterozygous variants affecting the Ile500 residue and Arg496 residue of the SMAD4 gene are implicated in this condition.
Kawmadi Gunawardena, Alessandro De Falco, Deborah Osio, Eleanor Sherlock, Emma Kivuva, Erina Sasaki, Francis H. Sansbury, Nayana Lahiri, Patricia Foley, Sahar Mansour, Shane McKee, Tazeen Ashraf, Nicola Brunetti‐Pierri, Usha Kini   +13 more
wiley   +1 more source

Statistical shape modeling of the human inner ear through micro‐computed tomography imaging

The Anatomical Record, EarlyView.
In this study, 54 cadaveric temporal bone specimens underwent high‐resolution micro‐CT imaging. Images were semi‐automatically segmented and converted to 3D surface mesh models for morphological measurement and analysis. Statistical shape models were created for the inner ear, cochlea, and vestibular system, as well as for sex‐ and side‐based subgroups.
Carmine Spedaliere, Alexandra Vaupotic, Jaehyun Hwang, Khalil Husein, Mustafa Hafidh, Kyle Rioux, S. Alireza Rohani, Sumit K. Agrawal, Hanif M. Ladak   +8 more
wiley   +1 more source

Ontogeny of murine bony semicircular canal form

The Anatomical Record, EarlyView.
Abstract The labyrinthine geometry and functional anatomy of the semicircular canals have intrigued scientists for decades, and there has been considerable interest in understanding how these complex structures grow and develop with evidence emerging from human studies that size maturation occurs exceptionally early by comparison with other systems ...
Marcela Cárdenas‐Serna, Nathan Jeffery   +1 more
wiley   +1 more source

Early Pliocene Varanus (Squamata, Varanidae) remains from Megalo Emvolon, Thessaloniki, Greece

The Anatomical Record, EarlyView.
The article describes new cranial and postcranial varanid material from Megalo Emvolon Lower Pliocene vertebrate fossil site near Thessaloniki. The fossils, likely representing a single individual, are referred to Varanus cf. marathonensis. Abstract This study describes new fossil varanid material from a recently discovered fossil spot (MVL site) at ...
Chara Drakopoulou, Georgios L. Georgalis, Georgios Lazaridis, Dimitris S. Kostopoulos   +3 more
wiley   +1 more source

Desarrollo de la osificación del canal semicircular posterior: estudio tomográfico [PDF]

, 2016
Hemos realizado un estudio sobre la osificación del canal semicircular posterior en fetos humanos mediante Tomografía Computarizada, utilizando 39 series embriológicas en edades comprendidas entre 19 semanas y 38 semanas.
Herreros Sáenz, Marta, Whyte Orozco, Jaime, Obón Nogués, Jesús Ángel   +2 more
core  

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

Bilateral posterior semicircular canal dysfunction: a new finding with video head impulse test

, 2020
Development of the video head impulse test (vHIT) assessing all three semicircular canals in both labyrinths has uncovered the existence of new vestibular failure patterns and made bilateral posterior canal dysfunction detection possible.
Lerchundi, Florencia, Laffue, Alfredo Hernan, Gualtieri, Francisco José, Olivier, Marina   +3 more
core   +1 more source