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ERP plots generated for the electrodes E129, E152, and E149 that showed the smallest cross-correlation in the task-switching experiment when the participants saw digits. 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 11–13 in Appendix A.
