“Weber's law” for position: the role of spatial frequency and contrast

@article{Levi1992WebersLF,
  title={“Weber's law” for position: the role of spatial frequency and contrast},
  author={Dennis Michael Levi and Stanley A. Klein},
  journal={Vision Research},
  year={1992},
  volume={32},
  pages={2235-2250}
}
  • D. Levi, S. Klein
  • Published 1 December 1992
  • Psychology, Medicine
  • Vision Research
We used Gabor bars to measure the effects of spatial bandwidth, spatial scale, contrast and separation on three-line spatial interval discrimination (bisection). In the first experiment, we used stimuli that were well above threshold. Our results show that at all spatial scales, spatial interval discrimination (three-line bisection) thresholds are proportional to the separation of the Gabor patches (i.e. Weber's law) when the separation exceeds approximately 2.5 times the standard deviation… Expand
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