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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. 1, Iss. 1 — Jan. 1, 1984
  • pp: 124–131

Modified line-element theory for spatial-frequency and width discrimination

Hugh R. Wilson and Douglas J. Gelb  »View Author Affiliations


JOSA A, Vol. 1, Issue 1, pp. 124-131 (1984)
http://dx.doi.org/10.1364/JOSAA.1.000124


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Abstract

Recent data from several laboratories have shown that spatial-frequency discrimination is not a smooth function of frequency but rather exhibits alternate peaks and troughs. A model for spatial-frequency discrimination analogous to line-element models for color discrimination is presented here and shown to provide a reasonable fit to the available data. This model is based on the predicted responses of six spatial-frequency-tuned mechanisms, whose sensitivity curves have been estimated in previously published masking experiments. In order to fit the data it is necessary to pool responses from units centered under the stimulus as well as from spatially neighboring units. Thus it appears that the visual system utilizes both spatial and spatial-frequency information in discrimination tasks.

© 1984 Optical Society of America

History
Original Manuscript: April 28, 1983
Manuscript Accepted: September 12, 1983
Published: January 1, 1984

Citation
Hugh R. Wilson and Douglas J. Gelb, "Modified line-element theory for spatial-frequency and width discrimination," J. Opt. Soc. Am. A 1, 124-131 (1984)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-1-1-124

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