Vestibular function in severe bilateral vestibulopathy

OBJECTIVES To assess residual vestibular function in patients with severe bilateral vestibulopathy comparing low frequency sinusoidal rotation with the novel technique of random, high acceleration rotation of the whole body. METHODS Eye movements were recorded by electro-oculography in darkness duri...

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Bibliographic Details
Published in:Journal of neurology, neurosurgery and psychiatry neurosurgery and psychiatry, 2001-07, Vol.71 (1), p.53-57
Main Authors: Wiest, G, Demer, J L, Tian, J, Crane, B T, Baloh, R W
Format: Article
Language:English
Subjects:
Adaptation (Physiology)
Adult
Aged
bilateral vestibulopathy
Biological and medical sciences
Digital computers
Electrooculography
Eye
Eye movements
Eye Movements - physiology
Fourier transforms
Functional Laterality - physiology
high acceleration rotation
Humans
Medical sciences
Middle Aged
Nervous system (semeiology, syndromes)
Nervous system as a whole
Neurology
Physiological aspects
Posture - physiology
Velocity
Vestibular Diseases - physiopathology
vestibulo-ocular reflex
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Summary:OBJECTIVES To assess residual vestibular function in patients with severe bilateral vestibulopathy comparing low frequency sinusoidal rotation with the novel technique of random, high acceleration rotation of the whole body. METHODS Eye movements were recorded by electro-oculography in darkness during passive, whole body sinusoidal yaw rotations at frequencies between 0.05 and 1.6 Hz in four patients who had absent caloric vestibular responses. These were compared with recordings using magnetic search coils during the first 100 ms after onset of whole body yaw rotation at peak accelerations of 2800°/s2. Off centre rotations added novel information about otolithic function. RESULTS Sinusoidal yaw rotations at 0.05 Hz, peak veocity 240°/s yielded minimal responses, with gain (eye velocity/head velocity)
ISSN:0022-3050
1468-330X
DOI:10.1136/jnnp.71.1.53