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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. 17, Iss. 5 — May. 1, 2000
  • pp: 836–845

Spatiotemporal filters in the detection of background modulation targets

Allison M. McKendrick, David R. Badcock, and Algis J. Vingrys  »View Author Affiliations


JOSA A, Vol. 17, Issue 5, pp. 836-845 (2000)
http://dx.doi.org/10.1364/JOSAA.17.000836


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Abstract

The background modulation method has been proposed as a useful test of early visual mechanisms [Biol. Cybern. 37, 77 (1980); Biol. Cybern. 47, 173 (1983)]. The task involves measuring detection thresholds for a luminous spot (increment) drifting over a spatially or temporally modulated background. The study explores the nature of the detecting mechanism in terms of spatial and temporal filters for both spatial and temporal background modulations. In both cases we find that thresholds can be explained by spatial contrast cues generated by the moving spot and that their spatiotemporal characteristics suggest detection by magnocellular processes.

© 2000 Optical Society of America

OCIS Codes
(330.1800) Vision, color, and visual optics : Vision - contrast sensitivity
(330.5510) Vision, color, and visual optics : Psychophysics
(330.6110) Vision, color, and visual optics : Spatial filtering
(330.7310) Vision, color, and visual optics : Vision

History
Original Manuscript: June 28, 1999
Revised Manuscript: December 1, 1999
Manuscript Accepted: February 7, 2000
Published: May 1, 2000

Citation
Allison M. McKendrick, David R. Badcock, and Algis J. Vingrys, "Spatiotemporal filters in the detection of background modulation targets," J. Opt. Soc. Am. A 17, 836-845 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-5-836

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