Fig. 6.

Distribution of measures of functional connectivity between left and right M1, in the low (blue) vs high (red) Condition across all participants: A stPLVs have overlap between the two conditions due to the condition-criteria being dynamic and individual. B imaginary part of stPLV (istPLV) shows more overlap between the conditions. The istPLV follows a fairly flat distribution in the high condition, with many trials having low istPLVs. C Distribution of the argument of the complex stPLV — where a bias towards zero and $\pm \pi$ indicates volume conduction artifact. In the high condition, there is some bias towards 0 which may explain the bigger difference between stPLv and istPLV in the high condition compared to the low condition. Still, the cases with $\pm \frac{\pi }{2}$ phase-shift are not drastically underrepresented. D Scatter plot of the complex stPLVs for each trial in the complex plane. Again, there is no strong bias towards the real axis. E Density of the imaginary part, rotated to highlight the identity of the $y$-axis with D. Taking the absolute value of the imaginary part yields B.