Fig 1.
Description of the flanker task.
(A) response device with 8-letters to 4-button-matching. (B) sequence restrictions. prime-probe-sequences regarding target-distractor-relation and prime-probe-relation. Target relation: TIR = Target Identity Repetition (identical target in prime and probe), TRR = Target Response Repetition (prime and probe target were different in identity, but were mapped on the same response button), TRC: Target Response Change (prime and probe target were associated with different responses). Distractor relation: DSC = Distractor Same Category (distractor in prime and probe were different, but associated with the same response), DR = Distractor Repetition from prime to probe; DC = Distractor Change (distractors in prime and probe were associated with different responses). See text for detailed explanation of sequence restrictions. (C) a fraction of a possible block, indicating included and excluded trials. abbreviations same as in b. Y = Yes, N = No. (D) experimental factors. 0 = excluded from analysis, 1 = analysed. abbreviations as in b.
Fig 2.
RTs separated by TARGET (TRR = Target Response Repetition, TRC = Target Response Change) and DISTRACTOR (DC = Distractor Change, DR = Distractor Repetition). Error bars indicate +/- 1 SE.
Fig 3.
Stimulus-locked event-related brain potentials (ERPs) on midline electrodes FZ and CZ separated by TARGET (Target Response Repetition (prime and probe target were different in identity, but were mapped on the same response button), Target Response Change (prime and probe target were associated with different responses). Lines represent DISTRACTOR (Distractor Repetition from prime to probe; Distractor Change (distractors in prime and probe were associated with different responses)). Baseline: 100 ms pre-stimulus. Shaded areas indicate time window for statistical analysis.