Fig 1.
a) The sequence of displays on each trial and their duration. The SOA varied randomly between 500, 700 and 900 ms, while the response display lasted until a response was given; b) The two types of target characters appearing in the stimulus display (helmet or cap); c) In each block, one of the four types of pre-stimulus displays was shown: No Cue, Visual Cue, Auditory Cue or Audio-Visual Cue.
Fig 2.
Mean RTs with standard errors, according to SOA (500, 700 and 900 ms) and pre-stimulus type (NC, VC, AC and AVC).
Table 1.
Top half: RTs (in seconds) and accuracy (proportions of correct responses), with standard deviations, in the different SOA conditions, regardless of pre-stimulus type. Bottom half: p-values of pairwise comparisons (one-tail t-tests, Benjamini-Hochberg adjusted), with statistically significant values in bold (α = .05).
Table 2.
Top half: RTs (in seconds) and accuracy (proportions of correct responses), with standard deviations, in the different pre-stimulus conditions, regardless of SOA. Bottom half: p-values of pairwise comparisons (one-tail t-tests, Benjamini-Hochberg adjusted), with statistically significant values in bold (α = .05).
Table 3.
Benjamini-Hochberg adjusted p-values from paired one-sided t-tests for pre-stimulus differences within each SOA, for reaction times (RTs) and accuracy (α = 0.05).
Statistically significant values are in bold.
Table 4.
Benjamini-Hochberg adjusted p-values from paired one-sided t-tests for differences between SOAs (all pairings) within each cue type, for reaction times (RTs) and accuracy (α = 0.05).
Statistically significant values are in bold.
Fig 3.
Mean accuracy (percentages) with standard error according to SOA (500, 700 and 900 ms) and pre-stimulus (NC, VC, AC and AVC).
Fig 4.
Accuracy in relation to RTs for each of the twelve different conditions.
Fig 5.
An example of Spatial Stroop and Simon effects in an “incongruent” AVC trial.
Fig 6.
Mean RTs with standard errors in congruent trials (blue) and incongruent trials (red), according to pre-stimulus display and SOA.
Fig 7.
Mean accuracy with standard errors in congruent trials (blue) and incongruent trials (red), according to pre-stimulus display and SOA.
Fig 8.
Accuracy in relation to RTs for each of the twelve different conditions, for congruent (blue) and incongruent (red) trials.
Dashed arrows connect corresponding conditions in congruent and incongruent trials.