Colour-luminance interactions in binocular summation

Vision Res. 2007 Apr;47(8):1120-8. doi: 10.1016/j.visres.2007.01.015. Epub 2007 Mar 6.


Using a noise-masking paradigm we test the notion of binocular detection mechanisms that combine luminance and colour contrast. Binocular summation was measured for achromatic and red-green isoluminant Gabor stimuli over a range of temporal frequencies and was compared with and without the presence of a two-dimensional, dynamic, luminance noise mask (correlated). While we found that luminance noise reduced binocular luminance summation at all temporal frequencies, binocular red-green summation was reduced only at frequencies of 8 Hz and above. Our results suggest the existence of binocular colour-luminance interactions restricted to high temporal frequencies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adaptation, Ocular / physiology
  • Color Perception / physiology*
  • Contrast Sensitivity / physiology*
  • Humans
  • Lighting*
  • Perceptual Masking
  • Photic Stimulation
  • Psychophysics
  • Vision, Binocular / physiology*