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Gray scale stimuli (A) and thresholded stimuli (B) manipulated across three spatial slope conditions (0.25, 1.25, and 2.25) and five temporal slope conditions (0.25, 0.75, 1.25, 1.75, and 2.25) at 6% RMS contrast. Note that the contrast of the stimuli has been increased for visibility in print. To view the experimental stimuli in motion, see the following Movies: (1) gray scale: https://osf.io/8ehpc/ (2) thresholded: https://osf.io/vzh92/.
