The perceived speed of second-order motion and its dependence on stimulus contrast

@article{Ledgeway1995ThePS,
  title={The perceived speed of second-order motion and its dependence on stimulus contrast},
  author={Timothy Ledgeway and Andrew T. Smith},
  journal={Vision Research},
  year={1995},
  volume={35},
  pages={1421-1434}
}
Speed matches were obtained, using a spatial two-alternative forced-choice task, between a second-order motion stimulus and a first-order motion stimulus. The second-order motion stimulus was composed of contrast-modulated noise [produced by multiplying two-dimensional (2-d), static noise by a drifting, one-dimensional (1-d) sinusoid]. The first-order motion stimulus was composed of luminance-modulated noise (produced by summing, rather than multiplying, 2-d noise and a drifting sine grafting… CONTINUE READING

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