Spatial profiles of local and nonlocal effects upon contrast detection/discrimination from classification images.

@article{Shimozaki2005SpatialPO,
  title={Spatial profiles of local and nonlocal effects upon contrast detection/discrimination from classification images.},
  author={Steven S. Shimozaki and Miguel P. Eckstein and Craig K. Abbey},
  journal={Journal of vision},
  year={2005},
  volume={5 1},
  pages={45-57}
}
We used classification images (A. J. Ahumada, Jr., & J. Lovell, 1971) to estimate the perceptual filter in a task designed to assess both local and nonlocal effects upon contrast detection/discrimination. Three observers performed a yes/no detection or discrimination task of a uniform circular decrement (radius = 0.68 deg) near threshold presented for 100 to 400 ms. Stimuli were presented in ring image noise that either covered the signal and an annular surrounding area (out to 1.36 deg), or… CONTINUE READING