Figure 1.

Task paradigm and analysis pipeline for BOLD-signal variability. A, Task paradigm showing examples of ongoing task trials, distractor inhibition trials, and task-switch trials. B, Standard regression model including one regressor per condition (plus 1st and 2nd derivative; see also Model A). C, Trial-by-trial regression model including one regressor (plus 1st and 2nd derivative) per trial for the condition of interest (see also Model B). D, Brain map exemplifying a DoR (i.e., standard model minus trial-by-trial regression model) map for one subject.