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Results for “LABYRINTH DISEASES”

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At least 865 records · Page 48Linked to original sources
PubMed1981

Rapid eye movements reflecting neurological disorders.

The accuracy and velocity of voluntary saccades together with the velocity of fact phases of nystagmus were studied in 26 patients belonging to 4 groups with defined neurological disorders. Patients with speech disorders of the dyspraxia type, indicating the lesion in the left frontal cortex, showed a pronounced decrease in saccadic accuracy in combination with normal saccadic and quick phase velocity. Patients with pontine disorders showed a significant decrease in the peak velocity of saccades and quick phases of nystagmus while the accuracy of the saccades ranged from normal to severely disturbed. Patients with acute meningo-encephalitis showed increases in peak velocity of saccades and of quick phases of nystagmus and the accuracy was somewhat reduced. Patients with a labyrinthine disease showed normal velocity of saccades and of quick phases as well as normal accuracy of saccades.

Acute Disease↗
PubMed1988

Pursuit eye movements. Methodological aspects.

A reduced smooth pursuit ability is often a sign of central vestibular pathology. Methodological aspects of stimulation, recording of eye movements and analysis of results in the evaluation of the smooth pursuit function are discussed. A method for evaluation of the smooth pursuit function over a broad frequency range is presented and the effects of target predictability and age on recorded parameters are shown.

Adult↗
PubMedDate not supplied

Frequency analysis of body sway in the upright posture. Statistical study in cases of peripheral vestibular disease.

The frequency component of shift in the centre of gravity while standing upright was investigated in 14 normal subjects and 30 patients with peripheral vestibular disease. Relative changes in the square root value of the power in each small frequency band of 0.1 and 0.2 Hz in frequencies of less than 2 Hz were evaluated statistically for four groups, viz. a group of normal subjects, and patients with Ménière's disease, benign paroxysmal positional vertigo, and vestibular neuritis. The influence of visual control in each group and the difference between each pathological group and the normal subjects were examined statistically. The combination of a minor change in each small frequency band is considered to be utilizable to establish a differential diagnosis for the three groups of peripheral vestibular disease and versus the normal group.

Adult↗
PubMed1982

Reflex erector spinal responses in disorders of the central nervous system.

In 64 patients with various central and peripheral nervous system disorders, the lumbar erector spinal muscle responses evoked by electrical stimulation of the brachial plexus at Erb's point or of the posterior tibial nerve in the popliteal fossa while standing were recorded. These responses were either absent or delayed in patients with involvement of the posterior columns. The latency of the responses was the same in patients with cerebellar syndromes, Parkinsonism, spastic hemiparesis or vestibular ataxia as in normal subjects. The size of the responses was diminished in patients with cerebellar syndromes and increased in those with Parkinsonism and spastic hemiparesis as compared with normal subjects.

Adolescent↗
PubMed1984

Brainstem auditory evoked potentials in dizziness.

To investigate the role of brainstem dysfunction in patients with dizziness, Brainstem Evoked Responses were recorded, and results of 100 such cases are presented. The present study further emphasizes the fact that dizziness is a symptom complex and careful evaluation of these patients is necessary. If a systematic approach is used, then a correct diagnosis can be achieved in over 95% of the cases. Vascular insufficiency of the brainstem can present as dizziness and may precede a catastrophic vascular infarction by weeks and months. Early recognition of the problem is of paramount importance, since anticoagulation therapy can be started early or other surgical correctable measures can be undertaken to prevent catastrophic infarction.

Aged↗
PubMed1982

[Expert testimony in vibration disease in inland navigation employees].

110 inland navigation workers, exposed to vibration and noise, have undergone electronystagmographic examinations. 61.7% subjects have developed disturbances of vestibular organ. The occurrence of those disturbances has been found to vary with the duration of vibration - and - noise exposure i.e. with the employment system. The 24 - hr - system poses a greater risk of vestibular organ disturbances than the 12 - hr - system. The investigation should promote setting - up some certification of the vibration disease in water transport workers.

Adult↗
PubMedDate not supplied

Characteristics of a "nonspecific" ENG population.

Fifty-one patients with "nonspecific" (nonlocalizing) electronystagmograms were studied both concurrently and retrospectively to determine the characteristics of this sample population. Data were gathered for the following categories: (1) vestibular signs/symptoms; (2) trauma; (3) aural signs/symptoms; (4) hearing loss; (5) psychosocial behavior; (6) other neurological findings; and (7) other medical problems. Analysis indicates that twice as many females have nonspecific electronystagmogram findings. The majority of these are in the menopausal age range. Most patients are uncertain about the onset, duration, and frequency of their vestibular problems. A high percentage of the population had a history of psychiatric treatment.

Adolescent↗