Figure 3
Clusters of increased activity in the load contrast during target processing in the task-difficulty ROIs and visual areas for N = 27 participants. In the task-difficulty ROIs, increased activation was found under high load in the right insula (peak t-value = 5.40, p < 0.05) and the right anterior cingulate cortex (peak t-value = 4.09, p < 0.05). In visual areas, one cluster of increased activity under high load was observed in the left occipital pole (peak t-value = 4.23, p < 0.05). Displays of the clusters are accompanied by raincloud plots of the individual data points in each condition, comprising a jittered scatter plot of the cluster average of the betas per subject, a box-and-whisker plot, and a violin plot of the same data.
