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. Author manuscript; available in PMC: 2008 Jun 13.
Published in final edited form as: Neuroimage. 2005 Jul 1;28(1):249–255. doi: 10.1016/j.neuroimage.2005.05.048

Figure 1.

Figure 1

Experimental design. The experiment had a blocked component involving five experimental conditions: sex task, bar-orientation task at easy, medium, and hard difficulty levels, and bars-only task. During the sex task, subjects attended the faces and determined whether they were male or female. During the bar-orientation conditions, subjects fixated the faces but indicated whether the peripheral bars were like oriented or not. During sex-task and bar-orientation blocks, neutral and fearful faces were shown in a random fashion (“event-related”). The bars-only condition involved the same difficulty as the hard bar-orientation condition but did not include faces. The order of the blocks was randomized. Stimuli are not drawn to scale.