Figure 3.

Anterior cingulate cortex and retrieval competition. A, Trial-by-trial variance in target versus competitor evidence was negatively correlated with activation in anterior cingulate cortex. B, Activation in anterior cingulate cortex as a function of target versus competitor evidence (broken down by quartiles); activation in anterior cingulate cortex was relatively high when target–competitor evidence was low and relatively low when target–competitor evidence was high. Note: these data simply allow for visualization of the relationship referred to in A and do not constitute an independent analysis. Error bars reflect within-subject standard error.