Recovery of bilateral vestibular loss in Cogan's syndrome--a case report.

Objective: To show that both hearing and vestibular loss can be reversible and quantified in Cogan's syndrome.

Patient And Methods: Immunosuppressive medication was continued for more than 6 years in a young woman with Cogan's syndrome. Standard pure tone audiometry (PTA) and speech discrimination score (SDS) for hearing, motorized head impulse test (MHIT) for horizontal, angular vestibulo-ocular reflex, and erythrocyte sedimentation rate were followed serially.

Three-dimensional video-oculography in patients with vestibular neuritis.

Conclusions: The nystagmus recorded without visual fixation contained all three components in most patients with vestibular neuritis (VN). The nystagmus was unidirectional, strongly visually suppressed with the loss of vertical component in most patients, and it obeyed Alexander's law. Video-oculography (VOG) is a non-invasive tool for detailed analysis of nystagmus, and hence may improve differential diagnostics in dizzy patients.

[Treatment of sudden deafness].

Sudden sensorineural hearing loss can be accompanied by sensation of aural fullness or pressure, and tinnitus. External auditory canal, middle ear and neurological status are normal. Hearing of speech and whispered voice are impaired, and tuning fork tests show a sensorineural hearing loss.

Motorized head impulse rotator in patients with vestibular schwannoma.

Conclusion: Motorized head impulse rotator is an effective technique to assess peripheral vestibular function. Approximately a quarter of patients with vestibular schwannoma (VS) had preserved preoperative responses. Vestibular disability could not be predicted based on vestibulo-ocular reflex (VOR) performance during motion stimuli, or in the caloric test.

Motorized head impulse rotator for horizontal vestibulo-ocular reflex: Normal responses.

Objective: To characterize the horizontal angular vestibulo-ocular reflex using a new motorized head impulse rotator and electro-oculography technique.

Design: Prospective case-control study.

Participants: We included 22 healthy volunteers with unpredictable, horizontal motorized head impulses with a mean velocity of 170 degrees/s and a mean acceleration of 1550 degrees/s2.

Nystagmus measured with video-oculography: methodological aspects and normative data.

Detailed analysis of eye movements is essential in order to understand the pathophysiology underlying vestibular disturbances. We applied a commercial video-oculography (VOG) to measure spontaneous and provoked nystagmus in 20 healthy subjects. The slow-phase velocity (SPV) of the nystagmus was calculated.

Postural control measured by visual feedback posturography.

The objective was to study the applicability and repeatability of visual feedback posturography (VFP) in assessing postural control of 23 healthy subjects. The subjects had to move their center of gravity (COG) marker on a computer screen to chosen targets by leaning their body on the platform, and the accuracy, velocity, and side difference of these movements were measured. The intraclass correlation coefficients for all parameters during repeated tests were significant (r = 0.