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The flow of endolymph in the semicircular canals
Physics in Medicine & Biology, 1979The response of the receptors in the semicircular canals to rotary movement of the head is usually described in terms of an ordinary second order differential equation. There are, however, some theoretical objections to this equation and these are examined.
P M Haughton, K Pardoe
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Dehiscence of the posterior semicircular canal
American Journal of Otolaryngology, 2015Semicircular canal dehiscence (SCD) is a condition of the inner ear wherein the temporal bone adjacent to the vestibular apparatus thins or erodes completely. It has no clear epidemiological predisposing factors that have been identified to date. Its diagnosis is made difficult by a clinical presentation that often overlaps with other pathologies of ...
Steven A. Telian +2 more
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Orientation of the semicircular canals in rat
Brain Research, 1989The orientation of the rat semicircular canals was determined using one of two techniques. Null point analysis was used to define physiologically the planar equations of the anterior (n = 15) and posterior canals (n = 15); equations for the horizontal canal (n = 19) were determined using an anatomical dissection technique. Canal orientation was defined
Yasuhiro Torigoe, Robert H. I. Blanks
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The Dimensions and Sensitivities of Semicircular Canals
Journal of Experimental Biology, 1970ABSTRACT The dimensions of the semicircular canals of pike can be expressed as allometric functions of the body length L. The equal sensitivity of pike of different sizes to rotatory stimulation can be explained as a quadratic bending of the cupula.
H.H. van Barneveld +2 more
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Lateral Semicircular Canal Dehiscence
Otology & Neurotology, 2007genesis of these symptoms has been attributed to the presence of a third window, which provides a different path for the dissipation of acoustic energy (4). A subset of patients, however, are asymptomatic, and these patients’ conditions are diagnosed on imaging or postmortem analyses of temporal bones.
Marc K. Bassim +2 more
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Operative Techniques in Otolaryngology-Head and Neck Surgery, 2014
In the evaluation of patients with suspected superior (or posterior or lateral) semicircular canal dehiscence syndrome, imaging plays a crucial corroborative diagnostic role. The variable audiologic and vestibular signs and symptoms may be attributed to a third-window phenomenon, directly visible on computed tomography as a defect in the superior or ...
Ali R. Sepahdari, Brian D. Zipser
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In the evaluation of patients with suspected superior (or posterior or lateral) semicircular canal dehiscence syndrome, imaging plays a crucial corroborative diagnostic role. The variable audiologic and vestibular signs and symptoms may be attributed to a third-window phenomenon, directly visible on computed tomography as a defect in the superior or ...
Ali R. Sepahdari, Brian D. Zipser
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Prostaglandins in the semicircular canal of the frog
Hearing Research, 1987The synthesis of prostaglandins by ampulla and duct tissue isolated from the frog posterior semicircular canal was investigated in vitro. Ampulla and duct produced PGE2 (9 and 6 pg/structure, respectively) and prostacyclin (26 and 12 pg/structure). In the ampulla, prostaglandins mostly originated from the part containing dark and sensory cells and was ...
Brigitte Escoubet +11 more
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Multiple dehiscence of semicircular canals
The Journal of Laryngology & Otology, 2006Dehiscence of the semicircular canal is an uncommon condition and has been reported to involve the roof of the superior semicircular canal. We describe a case with dehiscence of four semicircular canals and in areas not involving the roof of the superior semicircular canal.
R M Alles +3 more
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Fistula of the lateral semicircular canal
Clinical Otolaryngology, 1978The principles enunciated by Adam Politzer concerning the management of fistula of the lateral semicircular canal are as true today as they were during his time, in spite of the advances made in otologic surgery during the past 25 years or more. If a fistula of the lateral semicircular canal is suspected or proven, the patient's hearing has a greater ...
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Cupulolithiasis of the horizontal semicircular canal
European Archives of Oto-Rhino-Laryngology, 2011To clarify whether positional nystagmus of horizontal cupulolithiasis contains vertical and torsional components, and to quantify the asymmetry, we analyzed nystagmus in four positions (healthy-ear-down, affected-ear-down, supine, nose-down), using 3-dimensional video-oculography.
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