Behavioral correlational analysis
We applied the described correlation analysis between participants’ membership to each cluster and the post-tDCS behavioral results of Accuracy and RT for the Flanker, N-Back and CPT tasks. Due to the low variability in the baseline EEG spectral activity of each participant (Fig. The following matrices (Fig. Correlation results for spectral clustering. Each matrix row corresponds to a specific behavioral task endpoint, and each matrix column corresponds to a particular treatment protocol. The colour bar represents the sign of the correlation (positive or negative) and 