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A wavelet approach for unsupervised nystagmus analysis on ENG and VOG recordings.
Annu Int Conf IEEE Eng Med Biol Soc
March 2011
Department of Knowledge Engineering, Maastricht University, The Netherlands.
Several algorithms are available to quantify nystagmus beats in electro nystagmography (ENG) and videooculography (VOG) recordings. These algorithms use parameterized approaches to detect the fast components of nystagmus beats. This paper proposes a wavelet approach to detect fast components of nystagmus beats.
View Article and Find Full Text PDFParoxysmal positional vertigo after cochlear implantation.
Acta Otolaryngol
May 2007
Otolaryngology Department, University of Brescia, Piazzale Spedali Civili 1, 5100 Brescia, Italy.
Conclusions: We observed 4 cases of paroxysmal positional vertigo (PPV) among 62 cochlear implant (CI) recipients. They occurred in the implanted ear without chronological relation with the surgical procedure or the implant's activation. All of them relapsed within 3 months after an initially successful repositioning maneuver, and finally recovered after the second one.
View Article and Find Full Text PDF[Vertigo and a role of neurovisual methods in it etiology and diagnosis].
Zh Nevrol Psikhiatr Im S S Korsakova
January 2006
Investigation of vestibular system using a standard method of electro-nystagmography in complex otoneurologic examination does not provide enough information on the etiology of vestibular analyzer lesion, location and diffusion of the pathological process. Neurovisual methods, in particular MRI and CT, have demonstrated high diagnostic validity in such pathological states as tumors of pons cerebellum and posterior focca; infarctions in the stem and cerebellum regions. The study revealed a role of MRI and CT in etiology of vertigo and lesions of cochleovestibular analyzer.
View Article and Find Full Text PDFThe effects of intense click sounds on velocity storage in optokinetic after-nystagmus.
Eur Arch Otorhinolaryngol
November 2000
Department of Otolaryngology, Shinshu University School of Medicine, Matsumoto, Japan.
Vestibular evoked myogenic potentials (VEMP) occurring after click stimulation in cervical muscles are thought to be a polysynaptic response of otolith-vestibular nerve origin. In optokinetic after-nystagmus (OKAN) the direction of after-nystagmus changes and slow-phase velocity decreases with head tilt. This phenomenon may be an otolith response to the direction of gravity.
View Article and Find Full Text PDFComputerized electro-nystagmography.
Acta Otolaryngol Suppl
October 1996
Department of Otolaryngology, Toyama Medical and Pharmaceutical University, Japan.
A computerized electro-nystagmography (ENG) system was developed on the basis of a new idea for the performance of ENG. In this system, all the functions of conventional ENG was performed by a personal computer (PC) except for the initial setting of an analog amplifier. The eye movement signals from the ENG amplifier were displayed on the graphic screen and recorded on a magnetic or magneto-optical disc.
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