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. Author manuscript; available in PMC: 2014 Jun 7.
Published in final edited form as: Vision Res. 2013 Apr 3;85:104–112. doi: 10.1016/j.visres.2013.03.009

Figure 1.

Figure 1

Two example trials. Subjects maintained fixation while viewing a circular stimulus grid. Each trial began with 400 ms of grid presentation. During the remaining 2600 ms, colorful contrast-reversing checkerboard patterns were simultaneously presented in one patch on each side of the grid. Subjects attended to the patches on the left or right side on alternating runs and reported when a low-contrast target was presented within the attended patch. In this example, a target was presented on the first trial but not the second trial.