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. Author manuscript; available in PMC: 2011 Nov 16.
Published in final edited form as: J Vis. 2010 Jun 1;10(6):23. doi: 10.1167/10.6.23

Figure 2.

Figure 2

Spatial arrangement of fixation marker and cube locations. Gray horizontal line indicates vertical midpoint of display. All stimuli were presented centrally but are shown here side by side for comparison: (a) Experiments 1 and 4; cubes appeared either above or below a central fixation marker. (b) Experiment 2a; cubes appeared either above or below the center of the display, together with a fixation marker that was always above the presented cube. (c) Experiment 2b; cubes appeared above or below the center of the display (note increase in cube spatial separation), together with a fixation marker at one of 16 locations circularly arranged around each of the two possible cube locations. (d) Experiment 3; cubes appeared directly above or below the fixation marker, which was at one of 16 possible cube locations circularly arranged around the center of the display.