The effects of increased attentional demand on the perception of visual vertical

2008 ◽  
Author(s):  
Lucinda K. Hughey ◽  
Rachel Kizony ◽  
Claire Perez ◽  
Joyce Fung
Keyword(s):  
Attentional Demand ◽  
Visual Vertical

Effects of attentional demand on input device use in younger and older adults

2003 ◽  
Author(s):  
Anne C. McLaughlin ◽  
Wendy A. Rogers ◽  
Arthur D. Fisk
Keyword(s):  
Older Adults ◽  
Input Device ◽  
Attentional Demand ◽  
Device Use

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 Bioinspired Autonomous Visual Vertical Control of a Quadrotor Unmanned Aerial Vehicle

2015 ◽  
Vol 38 (2) ◽  
pp. 249-262 ◽  
Author(s):  
Mohamad T. Alkowatly ◽  
Victor M. Becerra ◽  
William Holderbaum
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Vertical Control ◽  
Visual Vertical ◽  
Aerial Vehicle

Measuring Attentional Demand in Continuous Dual-task Performance

1997 ◽  
Vol 50 (4) ◽  
pp. 821-840 ◽  
Author(s):  
Patrick A. Bourke
Keyword(s):  
Task Performance ◽  
Dual Task ◽  
Alternative Possibility ◽  
Interval Scale ◽  
Attentional Demand ◽  
Attentional Demands ◽  
Intuitive Appeal ◽  
Dual Task Performance ◽  
General Limit ◽  
Dual Task Interference

Despite its intuitive appeal, the commonly held assumption that there is some general limitation on dual-task performance has been shown to be seriously flawed (Allport 1980; Navon 1984). Central to this has been the inability to measure the attentional demands of tasks, without which there is no way to determine whether their joint demands exceed the hypothetical general limit. In the absence of such a measure, dual-task interference can always be explained by the alternative possibility that specific interference has occurred. A method is described in which the attentional demands of tasks can be measured and cross validated by the use of two scales. Two experiments are described in which a general attentional limit is found; the measurement of attentional demand is consistent across scales and can be made at a level of precision approximating that of an interval scale.

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
Sign in / Sign up

Export Citation Format

Share Document