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The barberplaid illusion: plaid motion is biased by elongated aperturesThe perceived direction of motion of plaids windowed by elongated spatial Gaussians is biased toward the window's long axis. The bias increases as the relative angle between the plaid motion and the long axis of the window increases, peaks at a relative angle of approximately 45 deg, and then decreases. The bias increases as the window is made narrower (at fixed height) and decreases as the component spatial frequency increases (at fixed aperture size). We examine several models of human motion processing (cross-correlation, motion-energy, intersection-of-constraints, and vector-sum), and show that none of these standard models can predict our data. We conclude that spatial integration of motion signals plays a crucial role in plaid motion perception and that current models must be explicitly expanded to include such spatial interactions.
Document ID
20040173124
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Beutter, B. R.
(NASA Ames Research Center Moffett Field, CA United States)
Mulligan, J. B.
Stone, L. S.
Date Acquired
August 22, 2013
Publication Date
October 1, 1996
Publication Information
Publication: Vision research
Volume: 36
Issue: 19
ISSN: 0042-6989
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other
Keywords
NASA Center ARC
NASA Discipline Neuroscience

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