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Factors influencing perceived angular velocityAngular velocity perception is examined for rotations both in depth and in the image plane and the influence of several object properties on this motion parameter is explored. Two major object properties are considered, namely, texture density which determines the rate of edge transitions for rotations in depth, i.e., the number of texture elements that pass an object's boundary per unit of time, and object size which determines the tangential linear velocities and 2D image velocities of texture elements for a given angular velocity. Results of experiments show that edge-transition rate biased angular velocity estimates only when edges were highly salient. Element velocities had an impact on perceived angular velocity; this bias was associated with 2D image velocity rather than 3D tangential velocity. Despite these biases judgements were most strongly determined by the true angular velocity. Sensitivity to this higher order motion parameter appeared to be good for rotations both in depth (y-axis) and parallel to the line of sight (z-axis).
Document ID
19930033803
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kaiser, Mary K.
(NASA Ames Research Center Moffett Field, CA, United States)
Calderone, Jack B.
(San Jose State Univ. CA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Perception & Psychophysics
Volume: 50
Issue: 5
ISSN: 0031-5117
Subject Category
Behavioral Sciences
Accession Number
93A17800
Distribution Limits
Public
Copyright
Other

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