منابع مشابه
Positional nystagmus of central origin.
Audiometric, electrophysiologic, and radiographic findings for a 68-year-old male with an "imbalance" concern are presented. This paper has a two-fold purpose: (1) to present an unusual electronystagmography case study and (2) to highlight the importance of test conditions in lesion localization. The specific disease pathophysiology remains obscure. Repeated hearing tests documented a known hea...
متن کاملspontaneous nystagmus in benign paroxysmal positional vertigo: is it a new sign?
benign paroxysmal positional vertigo (bppv) is a condition that indicates a benign inner ear disorder. it is generally believed that bppv is due to the dislodged otoconial particles from otolith organs and unusual collection of them within any of semicircular canals or even in all three semicircular canals. although the typical features of nystagmus in bppv have been well-studied, very few stud...
متن کاملPseudo-spontaneous and head-shaking nystagmus in horizontal canal benign paroxysmal positional vertigo.
OBJECTIVES To determine the characteristics and diagnostic value of pseudo-spontaneous and head-shaking nystagmus (HSN) in benign paroxysmal positional vertigo involving the horizontal semicircular canal (HC-BPPV). STUDY DESIGN Retrospective case series review. METHODS After excluding 19 patients with canal paresis, abnormal head impulse test, recent history of peripheral or central vestibu...
متن کاملGaze-evoked Nystagmus and Its Diferential Diagnosis
DEFINITIONS Gaze-evoked Gaze-evoked nystagmus (GEN) is a jerk nystagmus, not present in primary position, elicited by attempted maintenance of eccentric eye position, GEN may have a linear or a decreasing-velocity exponential slow phase; the latter has sometimes been referred to as gaze-paretic nystagmus but, unless it is due to a muscle or nerve paresis, the GEN terminology is preferred. Disti...
متن کاملSpontaneous inversion of nystagmus without a positional change in the horizontal canal variant of benign paroxysmal positional vertigo.
OBJECTIVE We investigated the neuro-otological findings, including nystagmus, and the clinical course of patients with the horizontal canal variant of benign paroxysmal positional vertigo (HC-BPPV), who showed spontaneous inversion of nystagmus without a positional change. Furthermore, we speculated on the possible mechanism of spontaneous inversion of nystagmus without a positional change. P...
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ژورنال
عنوان ژورنال: Journal of Clinical Otolaryngology Head and Neck Surgery
سال: 1992
ISSN: 1225-0244,2713-833X
DOI: 10.35420/jcohns.1992.3.1.23