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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 16, Iss. 1 — Jan. 1, 1999
  • pp: 1–5

Global motion cues and the chromatic system

Lynda Bilodeau and Jocelyn Faubert  »View Author Affiliations


JOSA A, Vol. 16, Issue 1, pp. 1-5 (1999)
http://dx.doi.org/10.1364/JOSAA.16.000001


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Abstract

The capacity of the isolated chromatic system to perceive global motion was tested in a 40-deg visual field by use of random-dot kinematograms. The method of equivalent cone contrasts was used to directly compare the chromatic and the achromatic systems. The minimum number of dots necessary to correctly identify the motion direction was on the order of 20% for the isochromatic conditions, whereas thresholds were rarely obtained in the chromatic conditions. For both the isochromatic and the chromatic conditions, the central visual field was the most sensitive area, whereas the periphery was slightly less sensitive. This study suggests that the chromatic system does not efficiently integrate local motion cues to generate a global motion percept.

© 1999 Optical Society of America

OCIS Codes
(330.1720) Vision, color, and visual optics : Color vision
(330.4150) Vision, color, and visual optics : Motion detection
(330.5020) Vision, color, and visual optics : Perception psychology
(330.5510) Vision, color, and visual optics : Psychophysics

History
Original Manuscript: June 1, 1998
Revised Manuscript: September 11, 1998
Manuscript Accepted: September 28, 1998
Published: January 1, 1999

Citation
Lynda Bilodeau and Jocelyn Faubert, "Global motion cues and the chromatic system," J. Opt. Soc. Am. A 16, 1-5 (1999)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-16-1-1


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