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Vertical Nystagmus in the Bow and Lean Test may Indicate Hidden Posterior Semicircular Canal Benign Paroxysmal Positional Vertigo: Hypothesis of the Location of Otoconia. [PDF]

open access: yesSci Rep, 2020
The ‘Bow and Lean Test’ (BLT) was developed for proper diagnosis of horizontal semicircular canal benign paroxysmal positional vertigo (HSC-BPPV). Occasionally, down- and/or up-beating vertical nystagmus is observed during the BLT.
Choo OS   +4 more
europepmc   +2 more sources

Persistence of perilymph fistula mechanism in a completely paretic posterior semicircular canal [PDF]

open access: bronzeAktuelle Neurologie, 2005
The three dimensional eye movements (search coil technique) of a patient with a completely paretic left posterior semicircular canal as a result of a perilymph fistula (PLF) were studied. The patient still exhibited pressure induced nystagmus that obeyed Ewald's first law. This finding cannot be explained by otolith stimulation, but might indicate that
Christoph Helmchen
openalex   +5 more sources

Dye Tracking Following Posterior Semicircular Canal or Round Window Membrane Injections Suggests a Role for the Cochlea Aqueduct in Modulating Distribution. [PDF]

open access: yesFront Cell Neurosci, 2019
The inner ear houses the sensory epithelium responsible for vestibular and auditory function. The sensory epithelia are driven by pressure and vibration of the fluid filled structures in which they are embedded so that understanding the homeostatic ...
Talaei S, Schnee ME, Aaron KA, Ricci AJ.
europepmc   +2 more sources

Management of Benign Paroxysmal Positional Vertigo Not Attributed to the Posterior Semicircular Canal: A Case Series.

open access: yesAnn Indian Acad Neurol, 2019
We thank Vibha D for her interest in our article. While increasing the sample size will definitely increase power of the study, the sample size was estimated to be 240 individuals (120 cases and 120 controls) to detect an odds ratio of 2.0 with 80% power
Vlastarakos PV   +3 more
europepmc   +2 more sources

Posterior semicircular canal occlusion in the normal hearing ear [PDF]

open access: bronzeOtolaryngology–Head and Neck Surgery, 1991
This report outlines our experience with posterior semicircular canal occlusion, a new operative procedure for intractable benign paroxysmal positional vertigo (BPPV). We postulate that the resulting solid canal “plug” prevents endolymph movement within the posterior canal, which effectively fixes the cupula.
Lorne S. Parnes, Joseph A. McClure
openalex   +3 more sources

Apogeotropic Posterior Semicircular Canal Benign Paroxysmal Positional Vertigo: Some Clinical and Therapeutic Considerations [PDF]

open access: goldAudiology Research, 2015
We lately reported the cases of patients complaining positional vertigo whose nystagmic pattern was that of a peripheral torsional vertical positional down beating nystagmus originating from a lithiasis of the non-ampullary arm of the posterior ...
Paolo Vannucchi   +5 more
openalex   +2 more sources

The Video Head Impulse Test (vHIT) Detects Vertical Semicircular Canal Dysfunction [PDF]

open access: yesPLoS 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 ...
Gábor M Halmágyi   +2 more
exaly   +2 more sources

Management of Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo [PDF]

open access: yesFrontiers in Neurology, 2020
Benign paroxysmal positional vertigo (BPPV) is the most common cause of peripheral vestibular vertigo. It is caused by free-floating otoconia moving freely in one of the semicircular canals (canalolithiasis) or by otoliths adhered to the cupula ...
Francisco Zuma e Maia   +6 more
doaj   +3 more sources

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