NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Hierarchical motion organization in random dot configurationsMotion organization has 2 aspects: the extraction of a (moving) frame of reference and the hierarchical organization of moving elements within the reference frame. Using a discrimination of relative motions task, the authors found large differences between different types of motion (translation, divergence, and rotation) in the degree to which each can serve as a moving frame of reference. Translation and divergence are superior to rotation. There are, however, situations in which rotation can serve as a reference frame. This is due to the presence of a second factor, structural invariants (SIs). SIs are spatial relationships persisting among the elements within a configuration such as a collinearity among points or one point coinciding with the center of rotation for another (invariant radius). The combined effect of these 2 factors--motion type and SIs-influences perceptual motion organization.
Document ID
20040141439
Acquisition Source
Ames Research Center
Document Type
Reprint (Version printed in journal)
Authors
Bertamini, M.
(Staffordshire University Stoke-on-Trent, United Kingdom)
Proffitt, D. R.
Kaiser, M. K.
Date Acquired
August 22, 2013
Publication Date
August 1, 2000
Publication Information
Publication: Journal of experimental psychology. Human perception and performance
Volume: 26
Issue: 4
ISSN: 0096-1523
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: MH52640-02
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Space Human Factors
NASA Center ARC

Available Downloads

There are no available downloads for this record.
No Preview Available