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Query: UMLS:C0028738 (nystagmus)
 7,431 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The paper presents the results of the study of gaze-evoked nystagmus, direction-gaze nystagmus and optokinetic nystagmus in 193 subjects, including 85 healthy pilots and 64 persons with vestibular pathology of central origin. For this purpose, a computer program was applied for evoking strictly standardised oculomotor stimuli. Moreover, computer analysis of the responses was introduced. To make the method applicable for otoneurological evaluation of flying personnel members, physiological norms of the parameters of interest for gaze-evoked and optokinetic tests have been presented, based on the study results in different age groups. Regardless the applied procedure, an initial analysis was made in patients with vestibular pathology of central origin. After having compared these results with the results achieved in healthy population, the introduced battery of tests was found to be a reliable method of studies for the purpose of otoneurological diagnostics.
Otolaryngol Pol 1997
PMID:[Modified central otoneurological tests supported by computer analysis]. 975 2

We present videonystagmography a new method of vertigo diagnosis. The camera record eye movement. We can obtain regostration of nystagmus in all directions. Simplicity of use and great sensitiveness of to examinations are very important two.
Otolaryngol Pol 1997
PMID:[Videonystagmography: a new diagnostic method in vertigo]. 975 6

In this paper an attempt is described to estimate the incidence and frequency of neurologic and otologic symptoms among patients two years after TBE. We examined 43 persons of both sexes aged 17-58. The most frequent complaints were: headache--34.9%, equilibrium problems--37.2%, buzzing in the ears--27.9%, hearing problems--23.3%, memory problems--25.6%. Decrease of throat reflexes was stated in 3 (7%) and pseudobulbaris symptoms in 2 (4.6%), weakness of muscles in 4 (9.3%). In audiometric examination decrease of hearing was stated in 8 persons (18.5%). We registered nystagmus: spontaneous--4.6-7%, gaze--13.9-18.6%, positional-T, mainly Nylen I and III type-18.6-25.6%. Pathologic recording in the eye-tracking pattern test was shown in 7 (16.3%) persons. Asymmetry of optokinetic nystagmus was stated in 6 (13.9%) examined persons. Asymmetry in caloric test was proved in 25.5% of examined persons.
Otolaryngol Pol 1998
PMID:[Otoneurologic state estimation 2 years after tick-borne encephalitis]. 988 94

Studies were carried out on 32 persons between 38 and 54 years of age (average 45) with unilateral peripheral lesion function of the vestibular organ (among them 8 persons with complete lack of excitability) and 10 healthy persons between 23 and 42 years of age (average 32). All of the patients were examinated for vestibulo-visual interaction. With the help of electronystagmography, the eye movement was registered after visual stimulation, vestibular stimulation and simultaneous vestibulo-visual stimulation, with impulses evoking nystagmus of direction compatible and incompatible. Movement of black stripes on the white optokinetic screen with the velocity of 15 degrees/s, to the left and to the right, was visual stimulus. Vestibular organ was activated by cold water (30 degrees C), according to the Fitzgerald Hallpike's procedure. Nystagmus reaction was evaluated in the highest intensification on the basis of the mean velocity of the slow faze, amount of nystagmus deflexion, sum of amplitudes, as well as gain. We also took into account compatibility or incompatibility of the nystagmus directions which was induced by the simultaneous of the vestibulo-visual stimulation. It has been stated that the vestibulo-visual interaction in the unilateral peripheral lesion of vestibular organ does not differ in comparison with healthy persons. Besides, simultaneous vestibulo-visual stimulation induced by the impulses incompatible in their direction causes the decrease of the parameters value of the nystagmus in healthy persons and in persons with peripheral lesion of labyrinth. In the case of one-sided fall-out function of the vestibular organ an increase was observed of value gain of optokinetic nystagmus directed at the damaged side.
Otolaryngol Pol 1999
PMID:[Vestibulo-visual interaction in peripheral lesion of vestibular organ]. 1039 Oct 44

20 children between ages 6 and 15 who suffered from epilepsy classified according to suggestions of International League Against Epilepsy to partial seizures evolving to generalized seizures were tested otoneurologically. The aim of the study was to estimate the frequency and location of vestibular disturbances coexisting with the disease. Subjective and objective (using electronystagmography--ENG--and videonystagmography--VNG) otoneurological study was performed. Dizziness was noted in most cases. Nobody demonstrated normal ENG/VNG recordings and the character of the pathology suggested its central origin. Eye-tracking proof and optokinetic nystagmus (cortical and subcortical) revealed to be most helpful during diagnostic procedures. No correlation between the location of EEG pathological patterns and ENG pathological signs was proved.
Otolaryngol Pol 1999
PMID:[Vestibular findings in children's epilepsy]. 1058 59

The aim of this paper was evaluation of vertigo frequency in otosclerotic patients (group I N = 64) in comparison with control group (group II N = 20) and in people after stapedectomy (group III N = 64). Furthermore electronystagmographic recording spontaneous nystagmus, positional nystagmus were made. Computer analyses of ENG-recording and automatic calculation of directional preponderance and canal paresis were used. Vertigo was in 12% otosclerotic patients while in equal of age control group only in 5% subjects. Spontaneous nystagmus in 20% and positional nystagmus in 27% were recorded in otosclerotic patients while that took place in 10% and 15% control group respectively. Asymmetric reaction in-group I was in 21% cases and in 10% subject's in-group II. Real directional preponderance was in 18.8% otosclerotic patient's in-group I and it was absent in-group II. Obtained results revealed existence vestibule disturbances in otosclerotic patients. More frequent labyrinth objective symptoms were registered post stapedectomy. Vertigo in 21%, spontaneous nystagmus in 58%, positional nystagmus in 61%, asymmetric reaction in 48% was noted. Marks of vestibule and organ injury in otosclerosis and post stapedectomy were met. Vestibule disturbances were irritate and inconstant character. It is appears to be needed examination of balance system before stapedectomy in the planning of stapes operation and after operation on stapes. Presence of vestibular symptoms after stapes surgery is not cause less post stapedectomy improvement of hearing but sometimes postoperative improvement of hearing is better for lower frequencies in patients group with vestibular disturbances than in-patients without these symptoms.
Otolaryngol Pol 2000
PMID:[Vertigo and objective vestibular symptoms in computer analysis of ENG in otosclerotic patients and after stapes operations]. 1107 Jun 97

The aim of the study was objective assessment of the results of betahistyne treatment in patients with chronic insufficiency of the vertebrobasilar artery system by means of elektronystagmography (ENG). The patients had mostly vertigo and/or dizziness, headache, ear buzzing and disequilibrium sensations. In 46 patients clinical, audiological and ENG examinations were carried out. All symptoms decreased in frequency after the treatment. Vertigo and/or dizziness improvement was noted in 58.5% patients of cases, headache decreased in 56.5% of cases, ear buzzing decreased in 42.8% and hearing improved in 22.2%. Before treatment 76% of patients had pathologic changes in ENG, after treatment improvement of ENG was noted in all tests, particularly in 17 cases (48.6%). This was most frequent in spontaneous nystagmus (83%), positional test (85%), caloric test (83%), and optokinetic test (71%). Comparison of complaints and ENG findings before and after treatment showed improvement both in symptoms and signs. Betaserc was effective in the treatment of patients with vertebrobasilar system insufficiency both in subjective opinions of patients and in objective assessment by ENG.
Neurol Neurochir Pol
PMID:[Electronystagmography study in patients with the insufficiency of vertebrobasilar artery after betahistine treatment]. 1110 98

Otoneurological investigations were carried out in 24 patients with cerebello-pontine angle tumors demonstrated in computed tomography. Standardized history taking was followed by electronystagmographic and videonystagmographical tests. In no case correct electrophysiological results were obtained. Eye-tracking test and gaze nystagmus were most frequently abnormal and together with other data these abnormalities indicated the location of the process. A more extensive use of videonystagmography was postulated.
Neurol Neurochir Pol
PMID:[Electronystagmographic and videonystagmographic studies in cerebello-pontine angle tumors]. 1110 3

Migraine in childhood is relatively common disease. Although clinical practice and scientific publications recognize frequent association of migraine and vestibular disorders, relationships have yet to be well defined. In present study the vestibular function was extensively tested in 20 children suffering from migraine. All the patients underwent complete neurootological examination including tonal threshold audiometry, testing of vestibulo-spinal reflexes--Romberg and Unterberger-Fukuda tests, Dix-Halpike test for BPPV, videonystagmography. On videonystagmography each patient was evaluated regarding: calibration, spontaneous nystagmus, gaze nystagmus, eye tracking test, optokinetic and positional nystagmus, and caloric testing. The same procedure have been performed regarding control group comprised of 15 healthy. All the patients with migraine presented abnormalities in vestibular testing. Analysis of the results showed that: functional state of structures forming both visuo-ocular and vestibulo-ocular structures was altered in all the migraine patients evaluated in the study, pathological findings suggest mainly central localisation of vestibular dysfunction in children suffering from migraine, the number of pathological VNG findings seems not to be correlated with the type of migraine.
Otolaryngol Pol 2000
PMID:[The vestibular system and migraine in children]. 1120 39

Spinocerebellar ataxia is a group of diseases with autosomal dominant inheritance heterogenous both clinically and genetically. So called dynamic mutations underlie most these nosological units. The clinical patterns of various SCA types have not yet been defined completely. The purpose of the present report was description of the typical symptoms and signs of type 1 SCA. Seventeen patients from 13 families (M-2, F-15) were studied clinically in detail. The diagnosis was confirmed by DNA analysis. The assessment included neurological status, cognitive functions, the results of EEG, EMG, SEP, VEP, BAER and MRI examinations. The pedigrees indicated autosomal dominant inheritance pattern. The mean age at onset was 35.5 +/- 6.8 years (range 23-45 years) and it suggested negative correlation with the number of CAG repetitions. Cerebellar syndrome limb and truncal, ataxia and dysarthria was present in all cases. Six patients had nystagmus, 3 had slow saccades, 2 had gaze limitation upward, and lateral and 6 had dysphagia. Signs of pyramidal system involvement were found in 10 cases, one had athetotic movements, one had orthostatic hypotension. Two patients had dementia features, 9 had some decline of intellectual functions, mainly with difficulties of memorization, learning and concentration. In 16 cases MRI demonstrated vermis atrophy and atrophy of cerebellar hemispheres, 14 had fourth ventricle dilatation, 8 had flattening of pons base, 8 had narrowing of cervical spinal cord, 8 had dilated CSF spaces over frontal lobes and in 6 cases lateral ventricles were dilated. Electrophysiological peripheral nervous system investigations showed in 16 cases long-standing damage to the motor and sensory peripheral neurons at the level of nerve trunks, more pronounced in sensory nerves. In 13 cases peripheral neuron damage was subclinical. SEP showed in all patients disturbed function of ascending sensory pathways at peripheral and spinocortical levels.
Neurol Neurochir Pol
PMID:[Clinical picture of spinocerebellar ataxia type I (SCA1)]. 1198 14


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