## Variables and levels ## For the sake of clarity, variables are described in separated groups. Note that this might not follow the order of variables in the data files. **General procedure** - Task_Version: standard and online data are in separated csv files (see the Files section) - Experiment_Group: see Table 1 in the manuscript for further details. - Block: 1 to 6, experimental blocks to analyze the vigilance decrement across time on task. - Trial_Number: 1 to 80 for each experimental block - Trial_Type: - ANTI (trials for measuring the independence and interactions of phasic alertenss, orienting, and executive control; and the noise trials to compute false alarms for the executive vigilance task). - EV (trials for measuring the detection of infrequent critical signals in the executive vigilance task). - AV (trials for measuring the arousal vigilance component). - Correct_Answer: - 'M' for ANTI trials with the target pointing to the right - 'C' for ANTI trials with the target pointing to the left - 'Space' for the EV trials (i.e., infrequent displaced targets) - 'Any': in AV trials, there was not a specific correct response. - Reaction_Time: in milliseconds - Accuracy: 1=correct response, 0=incorrect response. Note that hits for the executive vigilance task can be computed by selecting trials with Accuracy=1 and Trial_Type=EV. - Answer: the response executed by participants. **Variables for computing Executive and Arousal vigilance measures** - Distance_Y_Max_T_L1_R1: the maximum veritcal distance between the target and the closest adjacent flankers. - Trial_FA_Difficult: dicotomic variable (YES/NO). The noise trials (i.e., the ANTI ones) of the executive vigilance task were categorized as a function of the chance to commit a false alarms. If there was a small vertical distance between the target and the closest adjacent flankers (i.e., the three lowest values in the above-mentioned variable), then it was NOT a 'difficult trial'; instead, if there was a large vertical distance between the target and the closest adjacent flanker (i.e., the two highest values in the above-mentioned variable), then it was considereded a 'difficult trial'. - FA_Total: false alarms computed from all ANTI trials - FA_Difficult: false alarms computed only from 'YES' trials of the 'Trial_FA_Difficult' variable. - Lapsus: responses highger than 600 ms or equal to 0 ms (i.e., no response) in the AV trials. **Factorial design for the embedded ANTI task** - Tone: variable for the warning signal condition (no tone, tone), suitable for measuring the phasic alertness functioning. - Validity: variable for the cueing condition (invalid, no cue, valid), suitable for measuring the orienting functioning. - Congruency: varaible for the congruency condition (congruent, incongruent), suitable for measuring the executive control functioning. **Stimuli features and position** - Target_direction: direction pointed by the target arrow (left/right). - Flankers_direction: direction pointed by the flanking arrows (left/right). - Cue_position: the position of the visual cue regarding the fixation point (up/down). - Arrows_position: the position of the string of arrows regarding the fixation point (up/down). - X_L2,Y_L2,X_L1,Y_L1,X_T,Y_T,X_R1,Y_R1,X_R2,Y_R2: variables regarding the position of the target ('T') and the flankers (left: 'L1', 'L2'; right: 'R1', 'R2') in the horizontal (X) and vertical (Y) axis.