Eeglab 14.1.2b

We recorded EEG data from a 64-electrode scalp cap according to the international 10-20 system (Brain Products, Munich, Germany), with the reference to the channel FCz. The electrooculogram (EOG; vertical) was recorded with electrodes placed below the right eye. Electrode impedances of EEG and EOG were maintained <5 kΩ. All electrodes were amplified using a 0.01 online high-pass filter and continuously sampled at 1000 Hz per channel for offline analysis.
EEG data were preprocessed with EEGLAB 14.1.2b (Delorme and Makeig, 2004 (link)) in Matlab 2014b (MathWorks Inc). It comprised the following steps: (I) resampling to 250 Hz; (ii) low-pass filtering of 30 Hz by FIR filter with 7.5 Hz transition band width; (iii) epoching from 500 ms before to 1000 ms after the T2 onset; (iv) baseline correction (−200 to 0 ms); (v) manually rejecting salient muscle epochs and bad channels (if any); (vi) Independent Component Analysis; (vii) visually inspecting and rejecting artifact components (horizontal and vertical eye movements and muscle components); (viii) interpolating bad channels (if any); (ix) re-referencing offline to the average of all electrodes and (x) rejecting trials in which EEG voltages were out of range [−80, 80] μV. Please note that the minimum number of trials in each condition was not less than 65.

We recorded EEG data from a 64‐electrode scalp cap according to the international 10–20 system (Brain Products, Munich, Germany), with the reference to the channel FCz. The electrooculogram (EOG; vertical) was recorded with electrodes placed below the right eye. Electrodes impedances of EEG and EOG were maintained <5 kΩ. All electrodes were amplified using a 0.01 online high‐pass filter and continuously sampled at 1,000 Hz per channel for offline analysis.
EEG data were preprocessed with EEGLAB 14.1.2b (http://sccn.ucsd.edu/eeglab/) in Matlab 2014b (MathWorks Inc). It comprised of the following steps: (a) resampling to 250Hz; (b) low‐pass filtering of 30Hz by FIR filter; (c) segmentation from 200ms before to 800ms after stimuli onset; (d) baseline correction from −200 to 0 ms; (e) manually rejecting salient muscle epochs and bad channels if any; (f) Independent Component Analysis (ICA); (g) visually inspecting and rejecting artifact components (horizontal and vertical eye movements and muscle components); (h) interpolating bad channels if any; (i) re‐referencing offline to the average of all electrodes; (j) rejecting trials in which EEG voltages were out of range (−80, 80) μV.