8.3. Electrophysiological data Preprocessing: continuous EEG will be acquired at 1200 Hz with a 64-channels Gtec HIamp system. Signal preprocessing will be performed using custom Matlab (Mathworks) scripts using functions from the EEGLAB toolbox. Following visual inspection, artifact-contaminated electrodes will be removed for each participant, and epoching will be performed at type 1 response onset. For each epoch, the signal from each electrode will be centered to zero and average-referenced. Following visual inspection and rejection of epochs containing artifactual signals, an independent component analysis will be applied to individual data sets, followed by a semi-automatic detection of artifactual components based on measures of autocorrelation, focal channel topography, and generic discontinuity. After artifacts rejection, artifact-contaminated electrodes will be interpolated using spherical splines.