Figure 2.

Effect of artifacts and artifact exclusion on test-retest reliability of the assessed measures. For each measure two boxplots indicate the complete data and artifact-free data variant, respectively. “-ae” indicates the boxplot of the respective measure when artifacts were excluded. S, spectrum; DC, direct dausality; hh, transfer function polynomial; AF, transfer function; COH, real valued coherence; iCOH, imaginary part of complex valued coherence; pCOH2, partial coherence; PDC, partial directed coherence; PDCF, partial directed coherence factor; GPDC, generalized partial directed coherence; DTF, directed transfer function; dDTF, direct directed transfer function; ffDTF, full frequency directed transfer function; GGC, Geweke's Granger causality.