scholarly journals Subjective visual vertical test: Normative values in healthy population

2008 ◽  
Vol 136 (11-12) ◽  
pp. 585-589 ◽  
Author(s):  
Stevan Jovanovic ◽  
Ksenija Ribaric-Jankes
Keyword(s):  
Healthy Subjects ◽  
Dynamic Test ◽  
Arithmetic Mean ◽  
Subjective Visual Vertical ◽  
Afferent Pathways ◽  
Static Test ◽  
Testing Procedures ◽  
Visual Vertical ◽  
The Right ◽  
Vertical Test

INTRODUCTION Subjective Visual Vertical test (SVV test) can be applied to measure one of the functions of the vestibular apparatus, its afferent pathways and nuclei within the brain stem. The test is based on the subjective assessment of verticality. The possibility of perceived visual vertical in healthy subjects can show deviation with accuracy of ?2? at most. OBJECTIVE The goal of the study is to present the results of the SVV test developed at our department. METHOD Two kinds of testing procedures were applied; the static test during which the subjects evaluated the verticality on a static background; the dynamic test during which the subjects evaluated the verticality after 20 seconds of rotation of the background to the right or to the left. Ninety-five healthy subjects aged between 21 and 79 years were tested. The whole group was divided into smaller groups according to age criterium. RESULTS The results showed statistically significant bigger SVV tilt in the subjects aged over 45 years than in the younger subjects. The arithmetic mean of the tilt to the left or tilt to the right in the group younger than 45 years was 0.42 degrees during the static test and 0.49 degrees during the dynamic test. The arithmetic mean for the group older than 45 years was 0.67 during the static test and 0.68 during the dynamic test. CONCLUSION The testing indicated that SVV perception showed a bigger tilt according to age. This should be taken into consideration in individual testing and evaluation of functional ability.

scholarly journals The use of a neck brace does not influence visual vertical perception

2011 ◽  
Vol 69 (3) ◽  
pp. 509-512 ◽  
Author(s):  
Martha Funabashi ◽  
Natya N.L. Silva ◽  
Luciana M. Watanabe ◽  
Taiza E.G Santos-Pontelli ◽  
José Fernando Colafêmina ◽  
...  
Keyword(s):  
Healthy Volunteers ◽  
Healthy Subjects ◽  
Afferent Input ◽  
Subjective Visual Vertical ◽  
Sensory Receptors ◽  
Ocular Torsion ◽  
Vertical Orientation ◽  
Mean Values ◽  
Visual Vertical ◽  
The Mean

Subjective visual vertical (SVV) evaluates the individual's capacity to determine the vertical orientation. Using a neck brace (NB) allow volunteers' heads fixation to reduce cephalic tilt during the exam, preventing compensatory ocular torsion and erroneous influence on SVV result. OBJECTIVE: To analyze the influence of somatosensory inputs caused by a NB on the SVV. METHOD: Thirty healthy volunteers performed static and dynamic SVV: six measures with and six without the NB. RESULTS: The mean values for static SVV were -0.075º±1.15º without NB and -0.372º±1.21º with NB. For dynamic SVV in clockwise direction were 1.73º±2.31º without NB and 1.53º±1.80º with NB. For dynamic SVV in counterclockwise direction was -1.50º±2.44º without NB and -1.11º±2.46º with NB. Differences between measurements with and without the NB were not statistically significant. CONCLUSION: Although the neck has many sensory receptors, the use of a NB does not provide sufficient afferent input to change healthy subjects' perception of visual verticality.

scholarly journals Head Roll-Tilt Subjective Visual Vertical Test in the Diagnosis of Persistent Postural-Perceptual Dizziness

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Chihiro Yagi ◽  
Yuka Morita ◽  
Meiko Kitazawa ◽  
Yoriko Nonomura ◽  
Tatsuya Yamagishi ◽  
...  
Keyword(s):  
Subjective Visual Vertical ◽  
Visual Vertical ◽  
Head Roll ◽  
Vertical Test ◽  
Roll Tilt

scholarly journals Independent Measures of Utricular Function: Ocular Vestibular Evoked Myogenic Potentials Do Not Correlate With Subjective Visual Vertical or Fundus Photographic Binocular Cyclorotation

2021 ◽  
Vol 12 ◽  
Author(s):  
Sarah Hösli ◽  
Dominik Straumann
Keyword(s):  
Diagnostic Tests ◽  
Diagnostic Workup ◽  
Vestibular Evoked Myogenic Potentials ◽  
Subjective Visual Vertical ◽  
Asymmetry Ratio ◽  
Visual Vertical ◽  
The Asymmetry ◽  
The Right ◽  
Utricular Function

Ocular vestibular evoked myogenic potentials (oVEMPs), subjective visual vertical (SVV), and fundus photographically measured binocular cyclorotation (BCR) are diagnostic tests to assess utricular function in patients with vertigo or dizziness. In 138 patients with chronic vertigo or dizziness, we asked whether the asymmetry ratio of oVEMP (normal, right side pathological, left side pathological) could predict the SVV deviation (normal, rightward deviation, leftward deviation) or BCR (normal, cyclorotation to the right, cyclorotation to the left). There was no correlation between oVEMP and SVV and between oVEMP and BCR, while SVV and BCR correlated highly. Although both oVEMP and SVV measure aspects of utricular function, our findings demonstrate that oVEMP and SVV are not redundant and may reflect different utricular pathologies. The role of fundus photographic BCR may be relegated to only confirm unclear SVV results in vestibular diagnostic workup.

Subjective Visual Vertical Testing in Patients With Chronic Suppurative Otitis Media

2020 ◽  
Vol 163 (5) ◽  
pp. 1018-1024
Author(s):  
Rafael da Costa Monsanto ◽  
Ana Luiza Papi Kasemodel ◽  
Andreza Tomaz ◽  
Norma de Oliveira Penido
Keyword(s):  
Otitis Media ◽  
Middle Ear ◽  
Vestibular Function ◽  
Chronic Suppurative Otitis Media ◽  
Controlled Study ◽  
Subjective Visual Vertical ◽  
Suppurative Otitis Media ◽  
Visual Vertical ◽  
Vestibular Symptoms ◽  
Vertical Test

Objective To analyze the results of the subjective visual vertical test using the “bucket method” in patients with chronic suppurative otitis media (CSOM). Study Design Cross-sectional, controlled study. Setting Outpatient otology clinic in a tertiary care hospital. Subjects and Methods Patients had CSOM, defined as the presence of chronic infection or inflammation of the middle ear cleft, associated with a perforation of the tympanic membrane, frequent or intractable middle ear suppuration, with or without cholesteatoma. Controls were selected using a nonprobability, purposive sampling method. We excluded patients with neurologic or metabolic diseases, cognitive deficits, otosclerosis, vestibular migraine, Ménière’s disease, past use of ototoxic medication, or head and neck cancer. The volunteers were subjected to the subjective visual vertical test using the “bucket method.” The results obtained in our study and control groups were analyzed using nonparametric tests. Results Our study comprised 51 patients with CSOM and 50 controls. In the CSOM group, we observed that 72.5% of the patients had vestibular symptoms in the past year, and 70.5% had abnormalities identified in at least 1 vestibular function test. The subjective visual vertical test revealed that patients with CSOM (with and without cholesteatoma) had significantly higher deviations of the true vertical as compared with controls (CSOM, 3.66°; controls, 0.76°; P < .001). Conclusion Our results revealed that CSOM was associated with high rates of vestibular symptoms, abnormal vestibular function tests, and abnormal subjective vertical visual results.

Suppression of the E-effect during the subjective visual vertical test

Neuroreport ◽  
2004 ◽  
Vol 15 (2) ◽  
pp. 325-327 ◽  
Author(s):  
Mieke Hoppenbrouwers ◽  
Floris L. Wuyts ◽  
Paul H. Van de Heyning
Keyword(s):  
Subjective Visual Vertical ◽  
Visual Vertical ◽  
Vertical Test

Subjective Visual Vertical Test

2009 ◽  
Vol 30 (04) ◽  
pp. 281-286 ◽  
Author(s):  
Faith Akin ◽  
Owen Murnane
Keyword(s):  
Subjective Visual Vertical ◽  
Visual Vertical ◽  
Vertical Test

scholarly journals The effect of head tilt angle in the roll plane on the virtual subjective visual vertical results in healthy adults

2021 ◽  
Author(s):  
Mahmoud Rezvani Amin ◽  
Moslem Shaabani ◽  
Mohsen Vahedi
Keyword(s):  
Tilt Angle ◽  
Head Tilt ◽  
Healthy Adults ◽  
Subjective Visual Vertical ◽  
Substantial Impact ◽  
Normal Individuals ◽  
Significant Difference ◽  
Visual Vertical ◽  
The Right ◽  
The Impact

Background and Aim: The subjective visual vertical (SVV) is commonly considered as an indicator of the sense of orientation and attributed to the utricular function. The present study examined the impact of different head tilt angles on SVV among the normal individuals. Methods: SVV was measured in 47 normal participants (30 males and 17 females; mean ± SD age: 22.14 ± 3.46) using a virtual goggle and forced-choice paradigm and was applied twice in 0º, 15º, 30° and 45º to the left or to the right. In addition, difference in mean of SVV in zero and non-zero positions was compared. Results: There was a statistically significant difference between the mean SVV results of 0º and 15º (p ˂ 0.001). The comparison of mean SVV results between 0º and 30º, and between 0º and 45º were not significant (p > 0.05). In addition, comparison of SVV results between rightward and leftward tilt of 15º was statistically significant (p ˂ 0.001). The latter comparison was not significant for 30º and 45º (p > 0.05). Conclusion: Our results showed that head tilt angle of 15º have a substantial impact on the virtual SVV. These findings must be taken into account in the growing body of research that uses the SVV paradigm in clinical populations.  Keywords: Head tilt angle; subjective visual vertical; virtual goggle; roll plane; utricle; healthy adults

scholarly journals Subjective Visual Vertical during Caloric Stimulation in Healthy Subjects: Implications to Research and Neurorehabilitation

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Martha Funabashi ◽  
Aline I. Flores ◽  
Amanda Vicentino ◽  
Camila G. C. Barros ◽  
Octavio M. Pontes-Neto ◽  
...  
Keyword(s):  
Healthy Subjects ◽  
Cognitive Strategies ◽  
Semicircular Canals ◽  
Subjective Visual Vertical ◽  
Caloric Stimulation ◽  
Neurologic Disorders ◽  
Significant Difference ◽  
Sensitive Tool ◽  
Visual Vertical ◽  
The Mean

Background. The subjective visual vertical (SVV) is a perception often impaired in patients with neurologic disorders and is considered a sensitive tool to detect otolithic dysfunctions. However, it remains unclear whether the semicircular canals (SCCs) are also involved in the visual vertical perception.Objective. The aim of this study was to analyze the influence of horizontal SCCs on SVV by caloric stimulation in healthy subjects.Methods. SVV was performed before and during the ice-cold caloric stimulation (4°C, right ear) in 30 healthy subjects.Results. The mean SVV tilts before and during the caloric stimulation were 0.31° ± 0.39 and −0.28° ± 0.40, respectively. There was no significant difference between the mean SVV tilts before and during stimulationp=0.113.Conclusion. These results suggest that horizontal SCCs do not influence SVV. Therefore, investigations and rehabilitation approaches for SVV misperceptions should be focused on otolithic and cognitive strategies.

Assessment of Subjective Visual Vertical (SVV) Using the “Bucket Test” and the Virtual SVV System

2018 ◽  
Vol 27 (3) ◽  
pp. 249-259 ◽  
Author(s):  
Patricia L. Michelson ◽  
Devin L. McCaslin ◽  
Gary P. Jacobson ◽  
Michelle Petrak ◽  
Lauren English ◽  
...  
Keyword(s):  
Tertiary Care ◽  
Intraclass Correlation ◽  
Subjective Visual Vertical ◽  
Retest Reliability ◽  
Large Tertiary Care ◽  
Visual Vertical ◽  
Virtual System ◽  
The Right ◽  
Test Retest Reliability ◽  
Head Positions

Objective The purpose of this study was to describe the variability and test–retest reliability of a commercially available subjective visual vertical (SVV) system known as Virtual SVV (Interacoustics). In addition, the study aimed to compare the reliability of the Virtual system with a previously established bucket test of SVV. Study Design Fifteen participants with normal hearing, normal middle ear function, and normal utricular function were included in the study. Each participant underwent static SVV testing using both the Virtual system and the bucket test. Subjects completed 2 testing sessions to determine test–retest reliability. For each test, data were collected with the head at 0°, tilted 45° to the right, and tilted 45° to the left. Setting This study was conducted in a balance function laboratory embedded in a large, tertiary care otology clinic. Results The mean SVV values obtained with the Virtual system were within 1°–2° from 0 with the head positioned at 0°, which is in agreement with many other studies of SVV with the head at 0° (Akin & Murnane, 2009; Halmagyi & Curthoys, 1999; Zwergal, Rettinger, Frenzel, Dieterich, & Strupp, 2009). Using the intraclass correlation coefficient, test–retest reliability of the Virtual system was excellent in the 45° left position and fair to good in the 45° right and 0° position. Test–retest reliability of the bucket test was poor in all head positions. Conclusions The Virtual system is a more reliable measure of static SVV than the bucket test. Therefore, the Virtual system could be utilized as a screening device for utricular dysfunction in busy clinical settings.

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