Speed discrimination of stereoscopic (cyclopean) motion

This study investigated the degree to which speed of stereoscopic translational motion (i.e. moving binocular disparity information) can be discriminated in a display that minimizes position information. Observers viewed dynamic random-element stereograms depicting arrays of randomly positioned ster...

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Bibliographic Details
Published in:Vision research (Oxford) 1997-04, Vol.37 (7), p.871-878
Main Authors: PATTERSON, R, DONNELLY, M, PHINNEY, R. E, NAWROT, M, WHITING, A, EYLE, T
Format: Article
Language:English
Subjects:
Biological and medical sciences
Depth Perception - physiology
Differential Threshold
Female
Fundamental and applied biological sciences. Psychology
Humans
Male
Motion Perception - physiology
Pattern Recognition, Visual - physiology
Perception
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Space life sciences
Time Factors
Vision
Vision Disparity - physiology
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Summary:This study investigated the degree to which speed of stereoscopic translational motion (i.e. moving binocular disparity information) can be discriminated in a display that minimizes position information. Observers viewed dynamic random-element stereograms depicting arrays of randomly positioned stereoscopic dots that moved bidirectionally. Two tasks were performed: a speed discrimination task and a displacement discrimination task. Across a range of conditions, speed could be discriminated under conditions in which displacement could not. Thus, speed of stereoscopic motion can be discriminated when position information is minimal. This result indicates that stereoscopic motion is sensed in a way that cannot be explained by feature tracking or by inferring the motion from memory of position and time.
ISSN:0042-6989
1878-5646
DOI:10.1016/S0042-6989(96)00226-X