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. Author manuscript; available in PMC: 2011 Sep 24.
Published in final edited form as: Vision Res. 2010 Jul 29;50(20):2080–2092. doi: 10.1016/j.visres.2010.07.020

Figure 1. The set of images used as gaze cues and the illustration of the two trial types in all the experimental conditions.

Figure 1

A. Images were obtained using a digital camera and edited using Adobe Photoshop software. B. In a Congruent trial (top row), the target (cross) was presented in the same direction (right side of the central fixation dot) as the direction of the eye gaze in the facial cue (right side) presented earlier in the trial. In an Incongruent trial (bottom row), the target was presented in the opposite direction (right side) from the direction of the eye gaze in the cue (left side) presented earlier. The cue onset to target onset delays (CTDs) ranged from 0 to 1000 ms. An observer released the appropriate switch to indicate the location of the target (right, for both of these two example trials), as soon as the target was perceived. For illustrative and printing convenience, some colors have been inverted; during the experiment, the fixation point and the target are bright and the background is black.