NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Optimal displacement in apparent motion and quadrature models of motion sensingA grating appears to move if it is displaced by some amount between two brief presentations, or between multiple successive presentations. A number of recent experiments have examined the influence of displacement size upon either the sensitivity to motion, or upon the induced motion aftereffect. Several recent motion models are based upon quadrature filters that respond in opposite quadrants in the spatiotemporal frequency plane. Predictions of the quadrature model are derived for both two-frame and multiframe displays. Quadrature models generally predict an optimal displacement of 1/4 cycle for two-frame displays, but in the multiframe case the prediction depends entirely on the frame rate.
Document ID
19910043546
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Watson, Andrew B.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Vision Research
Volume: 30
Issue: 9, 19
ISSN: 0042-6989
Subject Category
Behavioral Sciences
Accession Number
91A28169
Distribution Limits
Public
Copyright
Other

Available Downloads

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