Increments and decrements: luminance discrimination.

  title={Increments and decrements: luminance discrimination.},
  author={Paul Whittle},
  journal={Vision research},
  volume={26 10},
Photopic luminance discrimination thresholds were measured between two simultaneous spatially separate 1 degree squares presented for durations between 6 and 800 msec on an 11 degree background. For increments and weak decrements, threshold was proportional to the luminance difference, delta L, between square and background. Stronger decrements, except at the shortest durations, were more discriminable than increments with the same delta L, threshold being proportional to absolute luminance… CONTINUE READING
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