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Whole-brain analysis. A, Stimulus effect: painful versus nonpainful stimuli (averaged across tasks). B, Task effect: TP versus TL. C, Pairwise comparison: judging pain of painful stimuli versus nonpainful stimuli. D, Pairwise comparison: judging laterality of painful stimuli versus nonpainful stimuli. FI, but not ACC, showed a significant increase in activation for painful stimuli regardless of the task.
