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ERP plots generated for the electrodes E101, E126, and E119 that showed the smallest cross-correlation in the task-switching experiment when the participants saw letters. Red line—the participants that suffered from COVID-19 and with brain fog symptoms. Blue line—the participants that suffered from COVID-19 and without brain fog symptoms. Green line—the participants without COVID-19 episode. See also Tables 14–17 in Appendix A.
