Hierarchical motion organization in random dot configurations

Bertamini, M.; Proffitt, D. R.; Kaiser, M. K.

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NASA NTRS · 20040141439

Hierarchical motion organization in random dot configurations

Bertamini, M.·Proffitt, D. R.·Kaiser, M. K.

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Abstract

Motion 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.

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NASA Discipline Space Human Factors NASA Center ARC Discrimination (Psychology)Pattern Recognition, Visual Motion Perception Support, U.S. Gov't, Non-P.H.S Analysis of Variance Male Signal Detection (Psychology)Space Perception Adult Support, U.S. Gov't, P.H.S Motion Human Female

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Bertamini, M., Proffitt, D. R., Kaiser, M. K.. 2000-08-01. Hierarchical motion organization in random dot configurations. https://ntrs.nasa.gov/citations/20040141439

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