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. Author manuscript; available in PMC: 2012 Aug 1.
Published in final edited form as: Neuroimage. 2011 Apr 14;57(3):1177–1183. doi: 10.1016/j.neuroimage.2011.04.012

Figure 1.

Figure 1

Design of Experiments 1 and 2. Subjects viewed two sets of drifting gratings on either side of fixation with a duration of 400 ms. The task was to identify the motion of one grating as accelerating or decelerating. A cue at fixation indicated which of the gratings the subject should attend. In Experiment 1 (a), the cued location was constant for the entire scan. One half of trials contained gratings with 50% contrast and the other half contained trials with 100% contrast. In Experiment 2 (b), the cued location varied from trial to trial. The cue appeared either simultaneous (top) with, or 250 ms in advance of (bottom), the appearance of the gratings.