Related Experiment Video
Updated: May 17, 2026
Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
Published on: April 28, 2020
Software for subjective visual vertical assessment: an observational cross-sectional study
Theo Zeferino Pavan1, Martha Funabashi, José Ailton Oliveira Carneiro
1Department of Physics, School of Philosophy, Sciences, and Literature of Ribeirão Preto, University of São Paulo, Ribeirão Preto - SP, Brazil.
Unlabelled:
Spatial orientation in relation to the gravitational axis is significantly important for the maintenance of the posture, gait and for most of the human's motor activities. The subjective visual vertical exam evaluates the individual's perception of vertical orientation.
Objectives:
The aims of this study were (1) to develop a virtual system to evaluate the subjective visual vertical exam, (2) to provide a simple tool to clinical practice and (3) to assess the subjective visual vertical values of healthy subjects using the new software.
Study Design:
observational cross-sectional study.
Methods:
Thirty healthy volunteers performed the subjective visual vertical exam in both static and dynamic conditions. The exam consisted in adjusting a virtual line in the vertical position using the computer mouse. For the static condition, the virtual line was projected in a white background. For the dynamic condition, black circles rotated in clockwise or counterclockwise directions. Six measurements were taken and the mean deviations in relation to the real vertical calculated.
Results:
The mean values of subjective visual vertical measurements were: static -0.372º; ± 1.21; dynamic clockwise 1.53º ± 1.80 and dynamic counterclockwise -1.11º ± 2.46.
Conclusion:
This software showed to be practical and accurate to be used in clinical routines.
