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Related Experiment Videos

Color shifts from S-cone patterned backgrounds: contrast sensitivity and spatial frequency selectivity.

Steven K Shevell1, Patrick Monnier

  • 1Department of Psychology, University of Chicago, 940 East 57th Street, Chicago, IL 60637, USA. shevell@uchicago.edu

Vision Research
|February 15, 2005
PubMed
Summary
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Stimulating specific cone cells (S-cones) in the eye causes noticeable color shifts. These shifts are proportional to S-cone contrast and are strongest at intermediate spatial frequencies, supporting an S-cone receptive field model.

Area of Science:

  • Vision science
  • Neuroscience
  • Color perception

Background:

  • Patterned backgrounds stimulating S-cones induce significant color shifts.
  • These shifts have been previously attributed to an S-cone antagonistic center-surround receptive field.

Purpose of the Study:

  • To investigate the proportionality of color shifts with S-cone contrast.
  • To determine the spatial frequency selectivity of these color shifts.

Main Methods:

  • Experimentally measuring color shifts induced by patterned backgrounds.
  • Varying S-cone contrast and spatial frequency of the inducing patterns.

Main Results:

  • Color shift magnitude demonstrated a linear relationship with S-cone contrast.

Related Experiment Videos

  • Maximum color shifts occurred with inducing patterns of intermediate spatial frequency.

    • Conclusions:

    • The results support a model of an S-cone spatially antagonistic receptive field.
    • This receptive field is the neural basis for large color shifts induced by S-cone patterns.