Results 181 to 190 of about 19,794 (219)

Is Spontaneous Nystagmus a Pathological Sign?

The Laryngoscope, 1982
This study was undertaken to determine the incidence of spontaneous nystagmus (SN) in normals and evaluate its significance in patients. There were 60 normal subjects and SN was recorded in 8 (13%). Between January 1979 and November 1981, SN without past pointing was the only detectable abnormality in 41 patients undergoing a vestibular evaluation.
openaire   +2 more sources

Intracranial Pathology in Young Children With Apparently Isolated Nystagmus

Journal of Pediatric Ophthalmology & Strabismus, 2012
Purpose: To assess the incidence of intracranial pathology in young children who had brain magnetic resonance imaging (MRI) to investigate apparently isolated nystagmus noted within the first few years of life. Methods: Retrospective institutional review of such children (up to 5 ...
Mansoor A, Shammari, Sahar M, Elkhamary, Arif O, Khan   +2 more
openaire   +2 more sources

The Effect of Eye Closure Upon the Pathological Vestibular Spontaneous Nystagmus

Acta Oto-Laryngologica, 1976
In the course of one year (September 1973 to September 1974) a total of 784 patients were examined with nystagmography. We were dealing with patients who consulted us for reasons of equilibrium disturbances, sensori-neural hearing loss and/or tinnitus.
G, Mulch, C, Bonner
openaire   +2 more sources

Optokinetic Nystagmus and Cerebral Disease

Archives of Neurology, 1966
OPTOKINETIC nystagmus (OKN) was introduced as a clinical tool by Barany1in 1921, but in spite of intensive study and investigation, knowledge of the mechanisms underlying the phenomenon and the anatomic substrates involved in its production is incomplete.
R A, Davidoff, A, Atkin, P J, Anderson, M B, Bender   +3 more
openaire   +2 more sources

Are All Atypical Positional Nystagmus Patterns Reflective of Central Pathology?

The Journal of Otolaryngology, 2001
In this retrospective clinical study, 20 patients were identified to have atypical positional nystagmus associated with positional vertigo following a thorough history and otoneurologic examination. All patients underwent either computed tomography or magnetic resonance imaging. Eight patients demonstrated radiologic evidence of intracranial pathology;
M B, Chang, A P, Bath, J A, Rutka
openaire   +2 more sources

The role of regularity and synchrony of cerebellar Purkinje cells for pathological nystagmus

Annals of the New York Academy of Sciences, 2011
Previous theories assumed that the beneficial effect of the potassium channel blocker 4‐aminopyridine (4‐AP) for patients suffering from downbeat nystagmus (DBN) or episodic ataxia type 2 (EA2) is due to an increase of excitability of cerebellar Purkinje cells (PC).
Stefan, Glasauer, Christian, Rössert, Michael, Strupp   +2 more
openaire   +2 more sources

Clinical implications of head‐shaking nystagmus in central and peripheral vestibular disorders: is perverted head‐shaking nystagmus specific for central vestibular pathology?

European Journal of Neurology, 2020
AbstractBackground and purposeThe patterns of head‐shaking nystagmus (HSN) aid in differentiation between central and peripheral vestibular disorders, and perverted HSN (pHSN) has been considered a central sign. The aim was to determine the characteristics of HSN in a large number of patients with either peripheral or central vestibular disorders in a ...
T.‐H. Yang, J.‐H. Lee, S.‐Y. Oh, J.‐J. Kang, J.‐S. Kim, M. Dieterich   +5 more
openaire   +2 more sources

Structural and functional MRIs disclose cerebellar pathologies in idiopathic downbeat nystagmus

Neurology, 2007
Neurologic disorders in which the etiology and pathogenesis are not yet understood are termed idiopathic. Downbeat nystagmus (DBN) is a frequent eye movement disorder that clinically manifests with oscillopsia and postural instability. Forty percent of patients with DBN are classified as having idiopathic DBN, because no underlying pathology can be ...
K, Hüfner, T, Stephan, R, Kalla, A, Deutschländer, J, Wagner, M, Holtmannspötter, G, Schulte-Altedorneburg, M, Strupp, T, Brandt, S, Glasauer   +9 more
openaire   +2 more sources

Familial Positional Downbeat Nystagmus and Cerebellar Ataxia: Clinical and Pathologic Findings

Annals of the New York Academy of Sciences, 2005
Abstract: A family with progressive cerebellar ataxia is reported. The earlier signs of cerebellar dysfunction was positional downbeat nystagmus (PDBN). An autopsy of one member with PDBN, who died early in the disease of unrelated causes, showed loss of Purkinje cells primarily in the nodulus.
Jorge C, Kattah, Meena, Gujrati
openaire   +2 more sources

Eye tracker based method for quantitative analysis of pathological nystagmus

2011 24th International Symposium on Computer-Based Medical Systems (CBMS), 2011
In this paper we propose a method for quantitative assessment of pathological nystagmus by using eye gaze data recorded with an eye tracker (Tobii T60). In detail, we use data acquired while patients perform two tests, the smooth pursuit and the saccadic movement test (implemented on the Tobii T60 using its API), that may indicate altered ophthalmic ...
GIORDANO, Daniela, Pino C, SPAMPINATO, CONCETTO, Di Pietro M, Reibaldi A.   +4 more
openaire   +1 more source