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. Author manuscript; available in PMC: 2011 May 18.
Published in final edited form as: J Vis. 2010 May 1;10(5):16. doi: 10.1167/10.5.16

Figure 1.

Figure 1

Stimulus examples. (a) Pre- and post-test stimuli in the unflanked and flanked conditions. The flankers, when presented, had a fixed Weber contrast of 33% and were placed from the target at a center-to-center distance of 1.0× x-height. The masking noise was confined to within the largest bounding box of a letter and centered at the target letter. Four noise levels, quantified here in units of rms Weber contrast, were used in the experiment. All target letters are shown at the same Weber contrast across the four noise levels for illustration. (b) An example of the training stimulus. The target letter and the flankers were presented at full contrast and the center-to-center distance between target and flanker was 0.8× x-height.