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. Author manuscript; available in PMC: 2009 Oct 15.
Published in final edited form as: Biol Psychiatry. 2008 Jul 17;64(8):681–690. doi: 10.1016/j.biopsych.2008.05.027

Figure 1.

Figure 1

Anticipation Task. The fMRI task combined a continuous performance task with the interspersed presentation of affective stimuli. Subjects were asked to press the left or right button on a touch pad based on the shape on the screen. Subjects were instructed prior to the task that a switch from a blue to a green shape accompanied by a low tone would indicate that a positive image was going to appear on the screen. In contrast, a switch from a blue to a red shape accompanied by a high tone signaled an impending negative image.