Fig 4. Theta power conflict adaptation effect in experiments 3&4—Flanker experiments with unpredictable and predictable timing.

(A)(B) The theta power congruency effect (current incongruent trial minus current congruent trial) in irrelevant-first trials as a function of the congruency level of the previous trial in the Flanker experiments with unpredictable (A) and predictable (B) timing (4–8 Hz as the theta range, measured at Fz). We found evidence for a theta power conflict adaptation effect in the predictable, but not in the unpredictable Flanker experiment.