Subjective visual vertical during eccentric rotation in patients with vestibular neuritis

2009 ◽  
Vol 267 (3) ◽  
pp. 357-361 ◽  
Author(s):  
Seok Min Hong ◽  
Seung Geun Yeo ◽  
Jae Yong Byun ◽  
Moon Suh Park ◽  
Chan Hum Park ◽  
...  
Keyword(s):  
Vestibular Neuritis ◽  
Subjective Visual Vertical ◽  
Eccentric Rotation ◽  
Visual Vertical

Role of subjective visual vertical test during eccentric rotation in the recovery phase of vestibular neuritis

2010 ◽  
Vol 37 (5) ◽  
pp. 565-569 ◽  
Author(s):  
Jae Yong Byun ◽  
Seok Min Hong ◽  
Seung Geun Yeo ◽  
Sang Hoon Kim ◽  
Sung Wan Kim ◽  
...  
Keyword(s):  
Recovery Phase ◽  
Vestibular Neuritis ◽  
Subjective Visual Vertical ◽  
Eccentric Rotation ◽  
Visual Vertical ◽  
Vertical Test

scholarly journals Temporal Changes of Subjective Visual Vertical in Patients with Vestibular Neuritis

2007 ◽  
Vol 66 (3) ◽  
pp. 116-122 ◽  
Author(s):  
Fumiyuki Goto ◽  
Kazutaka Higashino ◽  
Takanobu Kunihiro ◽  
Yujiro Hayashi ◽  
Akira Saito ◽  
...  
Keyword(s):  
Temporal Changes ◽  
Vestibular Neuritis ◽  
Subjective Visual Vertical ◽  
Visual Vertical

Subjective visual vertical in peripheral unilateral vestibular diseases*

1999 ◽  
Vol 9 (2) ◽  
pp. 145-152 ◽  
Author(s):  
D. Vibert ◽  
R. Häusler ◽  
A.B. Safran
Keyword(s):  
Eye Movements ◽  
Prospective Study ◽  
Vestibular Neuritis ◽  
Subjective Visual Vertical ◽  
Vestibular Loss ◽  
Vestibular Neurectomy ◽  
Vestibular Diseases ◽  
Vestibular Cues ◽  
Visual Vertical ◽  
Maddox Rod

In humans, the perception of vertical is provided by input from various sensorineural organs and pathways: vision, eye-movements, and proprioceptive and vestibular cues, particularly from the otolithic organs and graviceptive pathways. Well known in several types of brainstem lesions, subjective visual vertical (SVV) abnormalities may also be observed after peripheral vestibular lesions, such as surgical deafferentation, with a deviation directed toward the operated ear. Subjective visual vertical abnormalities are presumably related to a lesion of the otolithic organs and/or to changes in the afferent graviceptive pathways. The goal of this prospective study was to measure the SVV and to define the influence of the otolithic organs in patients suffering from various types of peripheral vestibular diseases: unilateral sudden cochleo-vestibular loss, so-called “viral labyrinthitis” (VL), sudden idiopathic unilateral peripheral vestibular loss, so-called “vestibular neuritis” (Ne). Data were compared with findings after unilateral surgical deafferentations such as vestibular neurectomy (VN) and labyrinthectomy (Lab). Subjective visual vertical was measured with a binocular test (vertical frame) and a monocular test (Maddox rod). In all patients, after VN and Lab, the SVV showed a 10 – 30 ∘ tilt with the vertical frame (N: 0 ± 2 ∘ ), 5 – 15 ∘ with the Maddox rod (N: 0 ± 4 ∘ ). With the vertical frame, SVV was tilted > 2 ∘ in VL (47%) VL (41%) Our results demonstrate that SVV is frequently tilted in acute peripheral vestibulopathies such as VL and Ne. These findings suggest that otolithic function is implicated in the deficit depending on the extent and/or the localisation of the peripheral vestibular lesion.

scholarly journals Relative diagnostic value of ocular vestibular evoked potentials and the subjective visual vertical during tilt and eccentric rotation

2011 ◽  
Vol 122 (2) ◽  
pp. 398-404 ◽  
Author(s):  
Yulia Valko ◽  
Stefan C.A. Hegemann ◽  
Konrad P. Weber ◽  
Dominik Straumann ◽  
Christopher J. Bockisch
Keyword(s):  
Evoked Potentials ◽  
Diagnostic Value ◽  
Subjective Visual Vertical ◽  
Eccentric Rotation ◽  
Visual Vertical ◽  
Vestibular Evoked Potentials

Chronic unilateral loss of otolith function revealed by the subjective visual vertical during off center yaw rotation

1999 ◽  
Vol 9 (6) ◽  
pp. 413-422
Author(s):  
Andreas Böhmer ◽  
Fred Mast
Keyword(s):  
Rotation Axis ◽  
Inertial Force ◽  
Normal Subjects ◽  
Clinical Test ◽  
Subjective Visual Vertical ◽  
Eccentric Rotation ◽  
Midsagittal Plane ◽  
Vestibular Loss ◽  
Visual Vertical ◽  
Set Up

Assessing the subjective visual vertical, SVV, in a static upright position is an easy clinical test in which a deviation of some 10 ∘ from true vertical indicates an acute loss of unilateral (otolithic) vestibular function on the side to which the SVV is tilted. Because this deviation of the SVV is compensated during the following months, patients with chronic unilateral vestibular loss do no longer differ from normal subjects. This study presents an experimental set-up that allows for clear detection of compensated chronic loss of unilateral otolithic function by testing the SVV. 21 normals and 17 unilaterally vestibular deafferentiated (UVD) patients (vestibular neurectomies) were first rotated on a human centrifuge about an earth vertical yaw axis through the midsagittal plane of the head ( 240 ∘ /s). This induced tilts of the gravito-inertial force (GIF) vectors, which differed at the two inner ears by 8 ∘ . During constant velocity rotation, the subjects were moved in pseudo-randomized steps laterally up to 16 cm apart from the rotation axis, inducing roll tilts of the GIF vectors up to 16 ∘ . Normal subjects set their SVV to pre-centrifugation values at positions with the midsagittal plane of their head close to the rotation axis, while chronic UVD patients indicated pre-centrifugation values during positions with the rotation axis 5.9 ± 2.5 cm paramedian on the side of the intact ear. Tilts of the GIF vectors shifted the SVV with a gain of 0.70 in normals and only 0.32 in UVD patients. Roll gains for laterally directed GIF vectors relative to the intact inner ear did not differ from medially directed roll gains in the UVD patients. The roll gains observed in this experimental set-up were lower than those observed with static body tilts or during eccentric rotation with a larger radius, which might be at least partially due to conflicting stimulation between otolithic and extra-vestibular cues.

Influence of Body Laterality on Recovery from Subjective Visual Vertical Tilt after Vestibular Neuritis

2014 ◽  
Vol 19 (4) ◽  
pp. 248-255 ◽  
Author(s):  
Michel Toupet ◽  
Christian Van Nechel ◽  
Alexis Bozorg Grayeli
Keyword(s):  
Vestibular Neuritis ◽  
Subjective Visual Vertical ◽  
Visual Vertical

The Subjective Visual Vertical as a Clinical Parameter of Vestibular Function in Peripheral Vestibular Diseases

1995 ◽  
Vol 5 (1) ◽  
pp. 35-45
Author(s):  
Andreas Böhmer ◽  
Jürg Rickenmann
Keyword(s):  
Vestibular Function ◽  
Normal Subjects ◽  
Spontaneous Nystagmus ◽  
Otolith Organs ◽  
Subjective Visual Vertical ◽  
Eccentric Rotation ◽  
Vestibular Neurectomy ◽  
Vestibular Diseases ◽  
Ramsay Hunt Syndrome ◽  
Visual Vertical

The subjective visual vertical, SV, was measured in the upright and side positions in 25 normal subjects and in 73 patients with various peripheral vestibular disorders. Significant deviations of SV (toward the affected ear) were found in 100% of the patients with vestibular nerve section and with Ramsay Hunt syndrome, in 89% of the patients with vestibular neuritis, and in 0% of the patients with benign paroxysmal positional vertigo. The deviation of SV gradually disappeared within a few weeks of the onset of the disease in all patients except in those with total VIIth nerve resection. SV is a parameter of tonic afferent differences between the two labyrinths similar to vestibular spontaneous nystagmus but is mediated by other parts of the inner ear (probably the otolith organs) and thus provides additional information on the labyrinthine function. SV measured in 90° side positions, however, did not reveal asymmetric vestibular sensitivity, which is in contrast to SV tested during eccentric rotation in patients after vestibular neurectomy.

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