Related Experiment Video
Updated: Aug 16, 2026

Experimental Methods to Study Human Postural Control
Published on: September 11, 2019
[Study of human orientation with respect to vertical under effect of lateral and combined longitudinal-lateral
I V Bukhtiiarov1, O A Vorobév, M N Khomenko
1State Research Experimental Institute of Aircraft and Space Medicine, Department of Defence, Russian Federation.
Abstract:
Six test subjects were subjected to NZ and Ny/Nz accelerations in centrifuge cabin having rotation radius of 6.55 m. During rotation, test subjects have determined the position of the subjective visual vertical. The performed studies have demonstrated that during exposure to NZ and Ny/NZ accelerations the image of subjective vertical the direction of which with rise of lateral component approaches the direction of the vector of resultant acceleration. The expressivity of this effect decreases with an increase of the longitudinal component of acceleration. It was suggested that pulling of high lateral accelerations (up to 2-3 units of g) in the flight of advanced highly manoeuvrable aircrafts can hinder in-flight spatial orientation of a pilot due to appearing of the stable illusions of spatial position.
Related Concept Videos
Normal and Tangetial Components: Problem Solving
Stress on an Oblique Plane
Relative Motion Analysis - Acceleration
Relative Motion Analysis using Rotating Axes - Acceleration
Time differentiation is...
Eccentric Axial Loading in a Plane of Symmetry
Tangential and Normal Components of Acceleration

