Influence of Somesthesic Input on Subjective Visual Vertical in Dyslexic Children

2019 ◽  
pp. 67-75
Author(s):  
Nathalie Goulème ◽  
Philippe Villeneuve ◽  
Christophe-Loïc Gérard ◽  
Hugo Peyre ◽  
Maria Pia Bucci
Keyword(s):  
Sensory Integration ◽  
Significant Interaction ◽  
Subjective Visual Vertical ◽  
Clockwise Direction ◽  
Tilt Condition ◽  
Dyslexic Group ◽  
Visual Vertical ◽  
Post Hoc

Purpose: We explored the perception of subjective visual vertical (SVV) in dyslexic and non-dyslexic age, sex and QImatched.Method: The SVV was evaluated with a laser and with or without foam under the feet. We performed an analysis ofvariance. Post hoc comparisons were made with the Fisher’s least significant differences test (LSD).Results: Our results showed two significant effects for groups and for tilt condition: counterclockwise or clockwisedirection and a significant interaction between group, tilt and somesthesic condition: without and with foam underthe feet. More precisely, SVV response in the tilt counterclockwise condition with foam was found to be significantlyless accurate for the dyslexic group than for the non-dyslexic group. Also, SVV response in the tilt counterclockwisedirection was found to be significantly less accurate for both groups compared to clockwise direction. Moreover, inclockwise direction SVV process was found to be significantly less accurate in dyslexic than in non-dyslexic group.Conclusion: These results suggest that the somesthesic information from foot sole affect SVV perception; such poorSVV responses could be due to an immaturity for heteromodal sensory integration needed in SVV perception.

Topology of brainstem lesions associated with subjective visual vertical tilt

Neurology ◽  
2014 ◽  
Vol 82 (22) ◽  
pp. 1968-1975 ◽  
Author(s):  
T.-H. Yang ◽  
S.-Y. Oh ◽  
K. Kwak ◽  
J.-M. Lee ◽  
B.-S. Shin ◽  
...  
Keyword(s):  
Subjective Visual Vertical ◽  
Brainstem Lesions ◽  
Visual Vertical

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 Relationship between subjective visual vertical and balance in individuals with multiple sclerosis

2018 ◽  
Vol 24 (1) ◽  
pp. e1757 ◽  
Author(s):  
Brooke N. Klatt ◽  
Patrick J. Sparto ◽  
Lauren Terhorst ◽  
Stanley Winser ◽  
Rock Heyman ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Subjective Visual Vertical ◽  
Visual Vertical

Subclinical deviation of the subjective visual vertical in patients affected by a primary headache

2009 ◽  
Vol 129 (1) ◽  
pp. 30-35 ◽  
Author(s):  
Masayuki Asai ◽  
Mitsuhiro Aoki ◽  
Hisamitsu Hayashi ◽  
Nansei Yamada ◽  
Keisuke Mizuta ◽  
...  
Keyword(s):  
Primary Headache ◽  
Subjective Visual Vertical ◽  
Visual Vertical

scholarly journals Contribution of Visual Input to the Subjective Visual Vertical During Prolonged Lateral Tilt Position

2010 ◽  
Vol 01 (01) ◽  
Author(s):  
Fumiyuki Goto ◽  
Tomoko Tsutumi ◽  
Hironari Kobayashi ◽  
Akira Saito ◽  
Jin Kanzaki
Keyword(s):  
Visual Input ◽  
Subjective Visual Vertical ◽  
Lateral Tilt ◽  
Visual Vertical

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

Abstract 16701: Conventional Cardiovascular Risk Modifies Clinical Outcomes Among Subjects With Elevated Coronary Artery Calcium Score With and Without Statin Therapy: Post Hoc Analysis From the St Francis Heart Study

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Salman Waheed ◽  
Simcha Pollack ◽  
Marguerite Roth ◽  
Nathaniel Reichek ◽  
Alan Guerci ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Statin Therapy ◽  
Coronary Artery Calcium ◽  
Significant Interaction ◽  
Coronary Artery Calcium Score ◽  
Calcium Score ◽  
Risk Profile ◽  
Post Hoc Analysis ◽  
Clinical Risk ◽  
Post Hoc

Objective: Coronary artery calcium score (CAC) predicts cardiovascular (CV) risk independent of conventional risk profile. However, it remains unclear how clinical risk profile modifies CV outcomes among subjects with elevated CAC with and without lipid lowering therapy. Methods: We conducted a post hoc analysis of the treatment trial of the St. Francis Heart Study_double-blind, placebo-controlled randomized clinical trial of atorvastatin 20 mg, vitamin C 1 g, and vitamin E 1,000 U daily, versus matching placebos in 993 asymptomatic individuals with CAC at or above the 80th percentile for age and gender. Primary CV outcomes included non-fatal MI or coronary death, coronary revascularization, stroke, and peripheral arterial revascularization. Among the placebo and treatment groups, we further stratified by eligibility for statin therapy based on current AHA guidelines yielding 4 subgroups: treated not eligible (+Rx/-E), placebo not eligible (-Rx/-E), treated eligible (+Rx/+E) and placebo eligible (-Rx/+E). Results: Mean age was 59±6 years. Those eligible were older (61±5 vs. 56±5 years) and more likely to be males (85% vs. 56%) than those not eligible. Median [IQR] CAC was higher in the eligible than not eligible groups (overall, p<0.0001), 199 [112-396] (+Rx/-E), 207 [114-416] (-Rx/-E), 490 [289-791] (+Rx/+E) and 484 [286-837] (-Rx/+E). After a median follow up of 4.8 years, 4.0%, 4.8%, 9.8% and 15.4% had a CV event in +Rx/-E, -Rx/-E, +Rx/+E and -Rx/+E, respectively. After adjusting for CV risk factors and CAC, hazard ratio (95% CI) was 1.1 (0.4-2.9), 3.3 (1.1-9.4) and 4.9 (1.7-14.0) for -Rx/-E, +Rx/+E and -Rx/+E, respectively compared to +Rx/-E. There was a significant interaction between CAC and eligibility for statin therapy for a CV outcome (p=0.05). Conclusion: Among subjects with elevated CAC, those eligible for statin therapy have higher CAC and overall greater risk for a CV outcome than those not eligible. While statin therapy lowers CV risk among those eligible, it does not significantly alter CV risk among those not eligible. There is a significant interaction between CAC and statin therapy eligibility for a CV outcome. Our findings suggest that clinical risk profile remains an important risk modifier for CV outcomes among those with elevated CAC.

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