Postural responses to stationary and moving scenes as a function of distance to the scene

Amplitude of postural sway in fore-after direction was investigated as a function of suggested distance between the observer and a stationary or moving scene. These experiments were done with a set-up in which movements of the observer were fed back real-time to a graphics workstation to modify the...

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Bibliographic Details
Published inHuman movement science Vol. 11; no. 1; pp. 195 - 203
Main Authors Dijkstra, T.M.H., Gielen, C.C.A.M., Melis, B.J.M.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.02.1992
Elsevier
Subjects
Activity levels. Psychomotricity
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychomotor activities
Human
Sensorimotor coordination
Stimulus distance
Stimulus movement
Vision
Oculomotor coordination
Perception
Motricity
Posture
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Summary:Amplitude of postural sway in fore-after direction was investigated as a function of suggested distance between the observer and a stationary or moving scene. These experiments were done with a set-up in which movements of the observer were fed back real-time to a graphics workstation to modify the video image projected on the screen. The results show that sway amplitude for a stationary scene increases with increasing distance. Sway amplitude in response to a scene moving along the line of sight with constant amplitude did not depend on distance. Both of these results can be explained by assuming a threshold for visual motion perception and by assuming that observers move so as to minimize retinal slip.
ISSN:0167-9457
1872-7646
DOI:10.1016/0167-9457(92)90060-O