Figure 4.
Individual differences in working memory (WM) performance as a function of prefrontal signal. Average WM performance (proportion correct) is shown as a function of average signal in PFC RoIs. (A–C) Frontopolar prefrontal cortex (aPFC) RoI is shown for negative (r = –.52, p = .016, two-tailed), neutral (r = –.04, n.s.), and task-related (r = –.09, n.s.) distractor conditions; (D–F) DlPFC RoI is shown for negative (r = –.67, p = .0004, two-tailed), neutral (r = –.29, n.s.), and task-related (r = –.37, n.s.) distractor conditions; (G–I) VlPFC RoI is shown for negative (r = –.09, n.s.), neutral (r = .3, n.s.), and task-related (r = –.23, n.s.) distractor conditions. Results are collapsed across low and high WM load given the same pattern at both loads. PFC BolD signal was averaged across both correct and incorrect trials.